始轴承间隙 slackness: 松弛度; 向下风偏航性complementary slackness: 补充松驰变量; 互补松弛性slackness welding: 熔渣焊complementary slackness theorem: 补充松驰变量原理predominant yang causing slackness: 阳强不密下载手机词典可随时随地查词查翻译