您要查找的是不是：
- variable freguency operation 变频运行
- Keywords:Converter system, Variable freguency adjusting speed, Vector control Ma... 关键词:转炉，变频调速，矢量控制，主从切换
- variable freguency drive technology 变频调速
- A Study of Variable Freguency Regulating Speed System for the Pressurization Mechanism of Rotary Drill 牙轮钻机加压变频调速系统的研究
- A constant, variable, function name, or expression. 一种常数、变量、函数名或表达式。
- He's mending nicely after his operation. 手术后他正在顺利康复。
- He is in charge of the operation of the steel mill. 他负责这家钢厂的经营工作。
- The prices are variable, shop around by all means. 价格高低不一，所以一定要货比三家逐店选购。
- The bank plan a rescue operation for the company. 银行计划对这个公司采取挽救措施。
- The temperature was a variable in the experiment. 在该实验中温度是个变量。
- The operation was a marvel of medical skill. 这个手术是医术的一个非凡范例。
- An operation is needed to remove your tonsil. 需要进行手术摘除你的扁桃体。
- A finite increment in a variable. 变量增量变量的有限增量
- The speed of the toy boat is variable. 玩具船的速度是可变的。
- The operation went like clockwork. 手术进行得极为顺利。
- Winds are mainly light and variable. 风力较弱，风向多变。
- When does the new law come into operation? 这项新法律何时生效？
- She was keyed up over her impending operation. 她为了即将进行的手术而心中忐忑不安。
- The actual operation lasted eight hours. 实际手术进行了8个钟头。
- The surgeon is performing a delicate operation. 那位外科医生正在做一个很精细的手术。
