four-ball extreme pressure tester
四球式试验器
four-ball tester【试验】
暂无补充释义。
相关词条
four-ball instrument
four-ball extreme pressure tester
four-ball bearing apparatus
four-ball tester【油气】
four-ball tester
four-ball machine
four-ball tester【试验】
暂无补充释义。
four-ball extreme pressure tester
four-ball instrument
four-ball extreme pressure tester
four-ball bearing apparatus
four-ball tester【油气】
four-ball tester
four-ball machine