set ring短语¹¹⁴⁴⁶⁷⁺⁴ 基本例句 套圈 After the rubber ring is a little compressed, another sealing is formed with the metal ring to contact the set ring, which bears the whole pressure on the whole disc. 在环形橡胶密封圈被稍微压缩后，阀板上的环形金属密封圈再与阀座接触又形成一道密封并承受整个启闭件上的压力； cnki