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1·So there is no evidence to show the liquid oil come from crank case ventilation and remain in the manifold assembly .

因此，没有证据显示这些液体机油来自曲轴箱通风和停留的各种装配管道…

2·The design optimization of jig construction, jig body, locating mechanism of crank case cores, jacket cores assembling vehicle and jig supporter was discussed.

对夹具结构、夹具本体、轴箱芯定位机构、水套砂芯组芯小车及夹具支架的设计优化进行了讨论。

3·Shaking screen on crank-connecting rod for reciprocating motion to the sieve case.

摇动筛依靠曲柄连杆机构使筛箱作往复运动。