Therefore, when the upper cover needs to be lifted, operators can lift the upper cover very conveniently by standing at any position around the vacuum lock.

因此，当需要提起上盖时，操作者站在真空锁周围任一位置时提起上盖都非常方便。

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Therefore, when the upper cover needs to be lifted, operators can lift the upper cover very conveniently by standing at any position around the vacuum lock.

因此，当需要提起上盖时，操作者站在真空锁周围任一位置时提起上盖都非常方便。

youdao