Wettability and surface topography of modified PU films were measured by contact angle meter and SEM.
用接触角测量仪和扫描电镜观察聚氨酯膜改性前后的表面润湿性和表面形貌的变化；
A feeler gauge a dial indicator or a cam-angle meter can be used to test the amount of contact-point opening.
测隙规、千分表或触点闭合角测定表也可检测触点开度。
A feeler gauge a dial indicator or a cam-angle meter can be used to test the amount of contact-point opening.
测隙规，千分表或触点闭合角测定表也可检测触点开度。
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