| 释义 |
〔washer〕A flat disk, as of metal, plastic, rubber, or leather, placed beneath a nut or at an axle bearing or a joint to relieve friction, prevent leakage, or distribute pressure.垫圈：用金属、塑料、橡胶或皮革等制的平的圆盘状物，放于螺钉下或轮轴处或连接处以减少摩擦，防止渗漏或均衡压力〔pack〕To wrap tightly for protection or to prevent leakage:扎紧：为了保护或防止渗漏而紧紧扎好： |