... three-arm pickling machine 三摇臂式酸洗机 three-arm protractor 三臂分度器 three-axis gyroscope 三轴陀螺仪 ...
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three-arm protractor 三杆分度仪 ; [水运] 三杆定位仪 ; 三臂定位器
arm protractor
手臂量角器
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Former Australian captain and match referee Barry Jarman even placed a protractor next to a picture of Murali, apparently feeling that a bent arm alone demonstrated that he was bowling no-balls.
WSJ: Cricket's 'Chucking' Challenge
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