- implemental
- instrumental
- 器具: utensil; implement; applianc ...
- 的: 4次方是 The fourth power of 2 i ...
- 测量器具的示值: indication of a measuring instrument
- 计量器具的检定: calibration of measruing device
- 电空器具的性能特征: characteristic features of electropneumatic apparatus
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