A Principle of Regulating Accumulated Error of Spiral Micrometer
一种调节螺旋测微仪累积性系统误差的原理
After 2 hours, the molds were measured by using spiral micrometer. Results There was no significant differences in size change of impressions between the controls and spraying group ( all P> 0.05).
结果对照组分别与相应印模材料消毒的喷涂组比较,差异无显著性意义(均P>0.05);
Spiral groove micrometer regulator
螺旋槽微米快慢针调速器
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