The planar surface is configured to engage the needle for disposing the shield in an extended position.
该平面构成用来接合所述针以便将该防护件设置在延伸位置中。
The opening is configured for travel about the needle to facilitate extension of the shield from a retracted position to an extended position.
开口构成为围绕着针头行进以便于防护件从回缩位置延伸至延伸位置。
The opening is configured for travel about the needle to facilitate extension of the shield from a retracted position to an extended position.
开口构成为围绕着针头行进以便于防护件从回缩位置延伸至延伸位置。
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