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游标卡尺是一种测量精度较高的常用测量工具.正确使用游标卡尺是一个合格的高中生的基本技能之一,但教材中对游标卡尺的介绍漏掉了一个重要部件——锁定螺钉及其作用.
Vernier caliper is a commonly used measurement tool with high measurement accuracy. Correct use of vernier caliper is one of the basic skills of a qualified high school student, but the introduction of the vernier caliper in the textbook missed an important component - the locking screw and its role.