null setting

and it gives that the additional instruction of the reason about the outer resistance of amperemeter equals the critical resistance when you adjust the amperemeter to zero.

并补充说明了为什么对电流计机械调零时应使外电阻等于电流计的临界电阻.

Mechanical Principle and Mechanical Elements

机械原理与机械零件

Mechanism & Machinery

机械原理和机械零件

Precision Machinery Elements & Mechanism

精密机械零件与机构

Harvester & plant machine parts

种植、收获机械零部件

We are an excellent manufacturer specialized in shreding machinery, shreding knife &related machine parts.

本公司专门生产破碎机械、破碎刀、粉碎机械、粉碎刀及相关机械零件。

klystron mechanical control

速调管机械调谐旋钮

dicraft article and machine part

离子镀工艺品和机械零件

Terms of conveying machinery--Unit and component parts

GB/T14521.3-1993运输机械术语装置和零部件

China General Machine Components Industry Association

中国机械通用零部件工业协会

This machine part needs surface finishing.

这个机械零件需要精密加工。

Research on the Influence of Geometrical Parameters on the Thermal Deformation of Mechanical Parts;

机械形体参数对零件热变形影响研究

Research on the Method of Mechanical Design Based on ASP Technology;

基于ASP的机械零部件设计方法的研究

Study on Machinery Parts CAE Technology;

基于SolidWorks的机械零件的CAE技术研究

Reform and Practice of Teaching Method in CAD Machine-Part Design Course;

机械零件课程设计CAD教学改革实践

Mechanical Components Feasibility Study Based on AutoCAD

基于AUTOCAD的机械零件装配的可行性研究

Study on the Size Measurement of Mechanical Parts Based on CCD

基于CCD的机械零件尺寸测量研究

The design of modular machinery hand in car production line

汽车零件精段自动生产线机械手设计