件组成的 meaning in Chinese

reading the book i mentioned yesterday will helyou

After tightening , the screw is secured and presses the disc firmly against the four - parted thrust ring thus protecting against slipping
在上紧后，螺丝可靠地把阀板压在由四部件组成的止推环上，防止滑。
Usually the dimension of this system is only several microns , even just some nanometers . and it is usally composed of optical , mechanical and electronic parts
微机电系统一般是由若干毫米级、微米级甚至纳米级的光、机、电器件组成的。
Against with the tower body which is main structure of construction hoist ’ is made of many bar , adopting the finite element analysis software sap84 to analyze the distortion and force condition of the tower body when the construction hoists works
针对由众多杆件组成的施工升降机的主体结构塔身,采用有限元分析软件sap84对其在工作过程中的变形及应力情况进行了分析。