The guard clanked his heavy ring of keys.
看守把他的那串沉甸甸的钥匙弄得叮当响。
To roll a heavy stone ring to the right place is a hard work.
把一个大石环滚到合适的地方是一项艰苦的劳动。
The nonuniform wear is a popular failure mode of separating ring of heavy vehicle clutch.
表面非均匀磨损是重载车辆主离合器分离环常见的失效形式。
The nonuniform wear is a popular failure mode of separating ring of heavy vehicle clutch.
表面非均匀磨损是重载车辆主离合器分离环常见的失效形式。
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