I must design a mechanical means of closing the portal.

我要尝试重新设计一种机械以关闭旋涡门.

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Finishes may be applied to cloth by mechanical means.

织物整理可以采用机械方式.

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These webs are formed by mechanical means.

这些纤维网是采用机械方式形成的网.

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The flared type joint is wholly a mechanical means of joining copper tubes.

扩口类型连接是铜管完全机械式连接方式.

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The third is by mechanical means in the notes on the convex and concave imprint flu.

三是用机械在钞票上压印了凸凹感.

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