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发表于 9-6-2010 10:34 AM
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本帖最后由 jacky121 于 20-6-2010 04:57 PM 编辑
（1）Dive Mask
i) Function
Human's eye in the water with the water contact, sees is a fuzziness directly, after putting on the mirror, only then may clear seeing. Eyeball's crystalline lens like camera's lens function, will blur the phantom adjusts the clear phantom to reflect on the retina; Sees one piece because in the water fuzzy is the eyeball crystalline lens' refractive index and the water is probably same, therefore loses the lens adjustment phantom function. After putting on the mirror, the eye and the water are separated air, the water not directly with the eyeball contact, restores the land same situation. In addition, the water and the air have the refraction effect, although sends sees the scenery clearly, but presents the enlargement effect, visible angle relative narrowing. Moreover the mirror still had the protection eye not the sea water stimulation, the pollution function.
ii) Characteristic
Mirror's pattern are many, circular, ellipse, four square shapes. The single lens, the double lens or Canada have the side window multi-lens, attaches the draining water valve mechanism, either pinches the nose balanced ear intrinsic pressure function the nose shape design or pinches nose scoop channel and so on. The mirror skirt department must be soft, nearby the group must tally with the face, nowadays's mirror many for double skirt hem unusual single skirt hem, has one's eyes tested and wear glasses when the double skirt must come comfortably compared to the single skirt. The skirt department with head harness's material quality many for the silica gel or the rubber, the skirt department also has by other plastic material quality like PVC makes the elasticity not to be good, is the bargain-priced goods. Although the rubber may manufacture the elastic outstanding skirt department, but will possibly cause the allergy to the certain skin sensitive person, but the silica gel cannot. The silica gel bears the oxidized condition to be also good, may manufacture the transparency to be good, the light-admitting quality is good and is artistic, or makes the color sharp skirt department, the price aspect is also high. Mirror's head harness wants extravagantly, but is not easy to skid.
What adjusts easily, to wear on the face may also adjust head harness will be good, the long time wears the use not to have the ill feeling only then to be possible.
Each mirror suits own face shape by no means that does not gather face's mirror to be unable for a long time to wear, easy to cause the uncomfortableness, this will cause your entire diving to be very difficult to endure, even is unable to dive continually, therefore the choice suits own mirror for most important, considers other functions again the choice.
（2）Breathing tube
i) Function
The breather pipe is only restricted in the water surface use. It causes the import and export which we breathe to elevate, the face soaks in the water the permeable breather pipe breath. Therefore breather pipe's use, lets us have the economical physical strength, the economical air bottle to use the gas, the buoyancy adjustment, the rest, and functions and so on relaxed long time diving. The use breath face soaks in the water may also breathe, therefore may swim the observation maintains the breath at the same time at the same time.
ii) Characteristic
Breather pipe's pattern separable J, L, the snake abdomen shape, attach the draw-off valve, and automatic draining water, somewhat has the installment which in the tube department peak installment the waterproofing sprinkles splashes, this kind of breather pipe are many a part in tube's department open end, some may load and unload at will somewhat for fixed or is united as one body with the tube department; This part has two kinds, one sprinkle for may the waterproofing splashes into the orifice “against to splash the wrap”, one plunges “against water valve” for the waterproofing. Against splashes an equipment to be able to display effectiveness in the water surface, plunges the water sewer to plunge the breather pipe. Against water valve's installment, in the orifice end soaks to the water surface, may also in the waterproof immersion pipe.
（3）Fins
i) Function
The swimming fins are kick by thigh's big muscle move, may increase delimits the water area, the rich elastic fin surface causes the draining water propulsive efficiency to increase, may save the suitable physical ability. Does not put on the swimming fins unarmed diving, the foot is unable to have the enough propelling force, the hand must help delimits increases the power and the balanced body, the swimming fins may provide the enough thrust force and reaches is balanced bodily the effect; Therefore both hands may vacate do other work, like holds the underwater photography machine, on the relaxed adjustment body's equipment, effectiveness help to dive the partner and so on. The swimming fins propelling power efficiency approximately above 3 times which swims for the average person, when meets the class or the wave, pair of effective swimming fins on like have not had the foot in on land to be the same.
ii) Characteristic
The swimming fins according to its contour are by, the fin department and the keel department combinations and so on a set of foot department become. Wraps the foot department to be possible to divide into the separable shoes with the adjustable two broad headings, the shoes puts on the part for the foot for entire to belay on the foot, puts on is putting on likely not ties up the shoelace the shoe to be the same. High speed on like sandals' heel belt, after putting on, is putting on the heel belt, the heel belt for may adjust the length, therefore is called the adjustable shape. The fin surface part has most universal one pieces, the furcation, the plane, V, to have discharges the water pore, not to have freeing port and so on. The majority of swimming fins have the keel department, the common keel function to support the fin surface, has the little swimming fins not to have the keel department or only then the protective function. The swimming fins material quality mainly has the rubber and the plastic two kind of division, it has the length respectively. Side the material quality aspect may divide into the rubber and the plastic system rubber system swimming fins will not be bristled by the reef abrasion, the flexibility is good, the thermal stability to be high, but is unable to generate bright sharp or the translucent color. Similarly the rubber or the plastic of material also has division buoyancy and the non-buoyancy, generally outside the black color is a buoyancy, but the most ideal swimming fins, its proportion and the sea water are the same.
（4）Diving Suit
1. Function
In the diving process, receives the sunlight on the water surface the insolation, in the water possibly suffers the hydra either the jellyfish sting, the seabed, the shoal or the shore sharp reef rock and the balanus oyster, as soon as will bump touches the body to create the abrasion; Only has the wetsuit to be able to protect the bodily semblance, may slow down the volumetric heat disappearing.
ii) Characteristic
The wetsuit also divides into many types, according to water temperature condition choice suitable heat preservation function wetsuit. The wetsuit material quality is different, it has the buoyancy is also different, but the majority wetsuits have the buoyancy, puts on has the buoyancy wetsuit, the swimmer might also not relaxed simple enjoy the float pleasure. Wants maintains in the water body temperature slow disappearing only has puts on the wetsuit. The wetsuit has the cold-resistance, the protection, the buoyancy three major functions, generally wetsuit separable wet and dry two kinds. |
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发表于 9-6-2010 10:30 AM
变色卡
千斤顶
班门弄斧，不好意思，自修自修而已的..
好帖～加油～
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