查询词典 answer a double purpose

double wheel pulley：双轮环式滑车

double wheel lathe 双轮式车床 | double wheel pulley 双轮环式滑车 | double width jacquard decorative cloth 宽幅提花装饰布

double chain pulley：双链滑轮

double ceiling 双层铺板 | double chain pulley 双链滑轮 | double chain riveting 双行并列铆接

double chain pulley：双链轮

double bushing;双轴套 | double chain pulley;双链轮 | double check valve;二级单向阀

double sheave pulley：双轮滑车

double service rack 两侧装卸桥台 | double sheave pulley 双轮滑车 | double shut-in assembly 双管关井总成

double scored pulley：双重滑轮

"double scale","双重刻度尺,双重比例尺" | "double scored pulley","双重滑轮" | "double screw jack","双螺旋千斤顶"

double iron pulley block：双轮铁滑车

double iron plane 双铁手刨 | double iron pulley block 双轮铁滑车 | double iron 工字铁

double ratio：交比

double product 二重积 | double ratio 交比 | double root 重根

double ratio：交比,非调和比

对顶角锥 double pyramid | 交比;非调和比 double ratio | 二重根 double root

double ratio：重比,交比

double rate meter 双费制电度计 | double ratio 重比,交比 | double ratio estimate 复比估计值

double ratio estimate：复比估计值

double ratio 重比,交比 | double ratio estimate 复比估计值 | double ratio estimator 复比估计,复比估计量

Hammond postulate：哈蒙德假说

Microscopic reversibility 微观可逆性 | Hammond postulate 哈蒙德假说 | Linear free energy 线性自由能

oil price：油价

oil paint 油漆 | oil price 油价 | oil shale 油页岩