短语词组短語parallel sinkage 平行下沉valve sinkage 氣門下陷sinkage experiment [水運]沉浮試騐sinkage range 鑽井壓縮機陞沉sinkage stiffness 下沉剛度sinkage measurement 沉陷量測定sinkage e 下沉settlement sinkage 沉降 返回 sinkage