随动杆臂

idle lever的用法和样例：

例句

The swaying movement and the lever arm effect error are two major factors affecting the alignment accuracy of shipbased weapons.摇摆运动及杆臂效应误差是影响舰载武器系统对准精度的主要因素。

用Mp3背六级单词054

measurement slave unlimited invert symmetrical lessen lever hip liability overlook thresh tensile vision likeness steady siege fission limp line linear vein commence obscure

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学英语单词

Abbocin

abraded coal particle

adstricting

advance payment of income tax