检查对其余为您的周期，并寻找螺丝，螺栓及其他紧固件。
Check over the remainder of your cycle and look for screws, bolts and other fastenings.
用螺纹联接并起紧固作用的零件称为螺纹紧固件。常用的螺纹紧固件有螺栓、双头螺柱、螺钉、螺母、垫圈等。
Parts with threads used for joining and fastening are called screw fasteners. The most widely used components as screw fasteners are bolts, double screw bolts, screws, nuts, washers.
螺栓：通常与螺母一起用于连接两个或更多零件的机械紧固件。
Bolt: Mechanical fastener, usually used with a nut, for connecting two or more parts.
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