Use: Test the flatness of plate, leveling ruler, machine tool working platform, guides and precision work-piece.
用途：检测平板、平尺、机床工作台、导轨和精密工件的平面度、直线度。
CHXY products can effectively complete complex parts, the model of three-dimensional measurement, mapping, can replace square box, plan-pin, high ruler for marking test.
CHXY系列产品既能有效完成复杂零部件、模型的三维空间测量、测绘，又可替代方箱、划针、高度尺进行划线检测。
To poor college students, student loans are credit loan which is a authoritative ruler to test the credit recognition of college students.
通过对调查问卷统计结果的分析，来检验助学贷款对大学生诚信认可度是否具有影响力。
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