The job of the timing belt is to turn the camshaft ( s ) at exactly 1 / 2 the speed of the crankshaft while maintaining a precise alignment 正時皮帶的工作是:當保持精準定位時調(diào)整凸輪軸的運轉(zhuǎn)速度為曲軸速度的一半
We demonstrate experimentally the technique to fabricate large does in the thick film on a concave lens ( mirrors ) surface with precise alignment by using the strategy of exposure twice 采用兩次曝光的方法在凹透鏡表面上厚光刻膠中制作衍射光學(xué)元件。
4 . under given conditions the alignment was finished before the torpedo was launched with the precise alignment method of fixed base alignment . after being launched the strapdown matrix was updated by quaternion algorithm 在給定條件下,選用靜基座組合對準方法中的精對準方法,完成了魚雷發(fā)射前的初始對準工作;魚雷發(fā)射出去后,采用四元數(shù)法進行了捷聯(lián)矩陣的更新。