vernier bevel protractor
[海运英汉词典]
vernier bevel protractor游标活动量角器
是什么意思,vernier bevel protractor的解释,vernier bevel protractor的翻译
vernier bevel protractor
[海运英汉词典]
vernier bevel protractor是什么意思,vernier bevel protractor的解释,vernier bevel protractor的翻译