surfaces of teeth 中文意思是什麼
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The lingual is the surfaces toward the inside of your mouth. your tongue rest against the lingual surfaces of your teeth
舌面是朝向你口腔裏面的面.你靜止的舌頭緊靠你牙齒的舌面 -
The baccal is the surfaces of the tooth toward the outside of the mouth. your cheek lies against the buccal surfaces of your teeth
頰面是一個牙齒朝向口腔外側的面.你臉頰的位置緊靠你牙齒的頰面 -
The effect of the friction between teeth on the contact fatigue strength of the tooth surfaces of a gearing
齒間摩擦對齒輪輪齒表面接觸疲勞強度的影向 -
At the time of birth, the crowns of the primary teeth ( baby teeth ) are almost complete and the chewing surfaces of the permanent molars are forming
在出生的時候，第一套牙（乳牙）的牙冠已基本發育完全，恆磨牙的咀嚼面也已形成。 -
It has many advantages such as several couples of teeth meshsing simultaneously, double touching lines on each interacting surface, high transmission ratio and heavy load, etc. and it ' s easy to form elastohydrodynamics lubricant film between two interacting surfaces. but this kind worm gear drive is not used widely in china. the reason is that its manufacturing method - dual generating method - is outdated
但是，由於目前加工該型蝸桿副的方法為對偶法，必須專門加工蝸桿和專用蝸輪滾刀，對于不同參數的蝸桿副蝸輪滾刀不能通用並且在加工中需多次對刀，導致平面二包蝸桿副加工成本高而精度低。 -
Dental sealants can provide a further layer of protection against cavities. the plastic coating is painted on the grooved chewing surfaces of the back teeth
牙科封閉劑可以形成額外的保護層以抵禦齲壞。方法是在後牙的窩溝表面塗布樹脂覆蓋料。 -
The occlusal surfaces is the surfaces with which we chew food. when you close your mouth, the occlusal surfaces of the upper and lower teeth come together
咬合面是用於我們咀嚼食物的面.當你閉上你的嘴時，上下牙的咬合面合在一起 -
2, the friction coefficient at the pitch point is not a monotonic quantity of the rational speed or the load, instead of having a maximum value. and the value of the friction coefficient is very small, its order of magnitude only being 10 - 3. so, it is reasonable that the friction force on teeth surfaces are ignored when the gear - driven contact fatigue strength is designed
2 、當輪齒在節點嚙合時，隨著轉速或載荷的變化，齒面摩擦系數並非呈單調變化，而是存在極值點;節點嚙合處的齒面摩擦系數很小，其數量級為10一， ，因此在做齒輪強度設計時，忽略齒面摩擦力的影響是有理論根據的。 -
3. clean the inside surfaces of the front teeth and hold the brush almost vertical
3前牙內側使牙刷與牙保持垂直，用牙刷頭上下刷牙。
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