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double pulley：双

723 dose rate 剂 | 724 double pulley 双 | 725 double refraction 双折射

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

driven pulley：从动皮带轮

driven multivibrator 受激多谐振荡器 | driven pulley 从动皮带轮 | driven roller conveyer 辊式传动运输机

driven pulley：从动

drive sprocket wheel 传动链轮 | driven pulley 从动 | driven shaft 从动轴

Dynamo oil：电机油

Dynamometer test 测功器试验 | Dynamo oil 电机油 | Dynamo pulley 发电机皮带轮

selfish interest：自私性兴趣

selfish impulse 自私的冲动 | selfish interest 自私性兴趣 | selfishness 自私

Lemon Water：熱檸水

熱檸蜜 Lemon Honey | 熱檸水 Lemon Water | 熱檸樂 Coke with Lemon