抗浮动安全系数factor: n. 1.〔英国〕经销人;(代客买卖收取佣金的)经纪人; ...safety: n. 1.安全;平安,稳安,保险。 2.(枪等的)保险器 ...against: Are you for or against ...flotation: n. = floatation. factor of safety against cracking: 抗裂安全系数下载手机词典可随时随地查词查翻译