crane with double lever jib 双臂俯仰起重机 ; 四连杆伸臂起重机
double lever safety valve 双杠杆安全阀
double lever shears 双杆剪机
Double Lever Effects 双杠杆效应
double lever basin mixer 双把手面盆龙头
double lever automatic weight 复式杠杆自动秤
double lever jib 四连杆式伸臂
double lever brake 双杆闸 ; 双柄煞车
The double lever system is internationally patented.
其双杠杆系统拥有国际专利。
A carve tool is presented actuated by PZT with double lever magnify mechanism, and integrated with the bionic robot. Experiment of carving on CD disk surface shows the feasibility of the robot.
研制压电陶瓷驱动双重杠杆放大的刻字作业工具，并与微定位机器人结合实现了光盘表面的刻字作业，验证了系统的有效性。
Based on the analysis of solutions of two examples, the author raised two questions about the using of lever rule in double phase systems.
通过对两个例题的错误解答进行分析，提出了相平衡体系中运用杠杆规则值得注意的两个问题。
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