短语词组短语sinker drill [机]冲钻;凿井用凿岩机;冲钻sinker weight 增加下沉力物体重量;沉砣Sinker EDM 电火花成型加工special sinker 特殊沉降片nozzle sinker 受油嘴sinker lead 沉子;沉降片蜡sinker butt 沉降片踵趾sinker head 沉片帽Sinker plating 交换添纱 返回 sinker