零件各组成部分的结构形状及相对位置，要表达完全且唯一确定，在明确表示的前提下，使视图的数量最少。
The structure figure and mutual position of parts different compositions must be shown out and positioned, and next is minimum view number.
曲轴是一个重要的组成部分卡车发动机部件，而这也是一个快速移动的零件。
Crankshaft is an important part of truck engine parts, and it is also a fast moving parts.
制造钣金零件工艺装备是飞机制造工程的重要组成部分。
The craft accoutrements for the parts of airplane is the important component of the aircraft manufacture.
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