发成碰撞时，通过牵引和张紧安全带圈带，肩带张紧装置补偿安全带松动和胶片卷轴效应。
When a collision occurs, the shoulder belt tightener compensates for "belt slack" and "film-reel effect" by retracting and tightening the belt strap.
调整密封圈的押紧程度，可以获得最佳密封效果。
对于推力轴承，与轴紧配合并一起运动的称轴圈，与轴承座或机械壳体孔成过渡配合并起支承作用的称座圈。
For thrust bearings, and shaft tight and together with the movement of said shaft washer, and bearing or mechanical shell holes into the transition and play supporting role with the said seat.
紧螺纹的扭矩、圈数及转速和螺纹密封脂、螺纹加工精度等都是影响螺纹联接质量的重要因素。
The makeup torque, rounds and rotary rate, as well as thread sealing grease and thread processing precision are all important elements affecting connection quality of casings.
悬紧这两部份螺旋﹐确保过滤网和橡胶热圈放到位。这对密封的完好性非常重要。
Screw the two sections together making sure the filter and rubber gasket are in place. This is important to ensure a perfect seal.
他把这根绳子紧系在金属圈上。
他把这根绳子紧系在金属圈上。
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