Terms for subject Oil / petroleum containing variable-speed

English	Chinese
constant rotary speed variable weight	定转速变钻压
infinitely variable speed	无级变速
variable speed control	调速控制
variable speed fluid drive	变速液压传动
variable speed gear	变速传动装置
variable speed viscosimeter	变速黏度计
variable weight and rotary speed	变压变速法
variable-speed electronic rheometer	变速电子流变仪
variable-speed engine	变速发动机
variable-speed governor	变速调速器