Introducing a kind of dynamic capability study method which tested jumpiness of the sawblade made in Germany on the precision sizing saw machine, as well as vibration of principal rotation axle.
介
一种用动态性能试验法测试空载时在精密推台锯上的德国产锯片锯齿径向跳动值,以及旋转主轴振动情况。
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" Of course he has, " said Ron, wheeling around. " I'm his second, who's yours? " Malfoy looked at Crabbe and Goyle, sizing them up. " Crabbe, " he said. " Midnight all right? We'll meet you in the trophy room; that's always unlocked."
“
当然听说过。”罗恩说着,突然转过身来。“我是
的助手,你的助手是谁? ” 马尔福看着克拉布和高尔,把

个儿掂量
番。 “克拉布。”
说,“就在午夜,怎么样? 我们在奖品陈列室和你们见面,那里从来不锁门。”