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1·This article mainly analyse the relation of setting and measurement results in needle tubing stiffness measuring test.

本文主要分析针管刚性测量中，设置与测量结果的关系。

2·The invention adopts the sleeve lateral wall braking hole and the structure of the braking disc, which is convenient for assemble, and makes the action to push the needle tubing effective and proper.

本发明所采用套筒侧壁制动孔与制动片的结构，可令组装方便，使用上则可令推动针管的动作确实有效且顺畅。