用一既可与细针尖端又可与粗针尖端啮合的滑动件关闭粗针的钩或细针的钩。

For selectively closing the hooks, a slide is provided, which can be brought into engagement both with the tip of the fine needle and with the tip of the coarser needle.

youdao

用一既可与细针尖端又可与粗针尖端啮合的滑动件关闭粗针的钩或细针的钩。

For selectively closing the hooks, a slide is provided, which can be brought into engagement both with the tip of the fine needle and with the tip of the coarser needle.

youdao