knife in浆叶入水倾斜过大knifen.刀v.用刀切割knife edge of balance天平的支棱knife coating process[化] 刮涂法knife-edge obstacle刃形障碍物knife handle of metal金属刀柄knife fretted by rust锈掉的刀子knife folding machine铡刀式折页机knife extension blade伸缩划料刀knife shape corrosion刀状腐蚀knife-edge follower尖顶从动杆,刀形随动件knife-shaped needle刃形指针