空隙，间隙允许自由运动所介入的空间或距离，如在机器零件之间的。
An intervening space or distance allowing free play, as between machine parts.
空隙，间隙：允许自由运动所介入的空间或距离，如在机器零件之间的。
An intervening space or distance allowing free play, as between machine parts.
空隙，间隙：允许自由运动所介入的空间或距离，如在机器零件之间的。
An intervening space or distance allowing free play, as between machine parts.
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