Lower the grab link until it engages the lifting chain. 3.

放松提升链条, 使其逐渐啮合抓钩链环.

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Release tension on lifting chain so that it engages the grab link and gradually . 4.

为了防止尼龙绳松弛,要使抓钩链环脱离提升链条.

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Lifting chain is a kind of lifting gear.

起重链条是起重工具的一种.

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