... unthreaded hole 无螺纹孔 unthreaded portion 无螺纹部分 unthreaded pipe 无螺纹的管子 ...
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... 孔 hole; opening; aperture 光孔 unthreaded hole 蔽光孔 masking aperture ...
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The thin supporting member can be axially moved in the unthreaded hole, and after being adjusted to an appropriate height, the thin supporting member is fixed by the bolt.
细支撑构件可以在光孔中轴向移 动，调节至适当的高度后，通过螺钉紧固住。
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