point gear
... 指针回转齿轮机构 counter train; 指针机构 point gear; 指针平衡器 pointer counterbalance; ...
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仪表的测量系统由接头、弹簧管和传动机构组成。通过指针指示仪表读数。
The system of measurement is composed by joint, spring pipe, and power transmission setting, and use the needle to note the number.
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