特殊用法acceleration restrictor1.加速度限制器derivative restrictor1.差动开关, 差动式限动器integral restrictor1.积分限制器, 积分开关nonadjustable restrictor1.不可调节流阀orifice restrictor1.孔口节流器ring-gap restrictor1.环隙节流堵vent restrictor1.排气限制器