升降阶梯 升降阶梯的英文 英语翻译 escalator; moving staircase 拓展翻译 热升降率thermal gradient升降吊桥lift bridge升降舵角elevator angle升降杆lifter升降机elevator; lifterelevator; lift升降机控制阀接头hoist control valve adapter升降螺杆lifting screw升降率gradient升降起重机hoisting crane升降式浮顶罐lifter roof tank升降式装卸车lift-truck升降室cage升降台elevator-platform升降梯式修正条款escalation clause升降线advance-decline line升降运送车lift truck热升时间warm-up time热续升时aggred. feb.容许温升permissible temperature rise蠕升creep; creeping