1·Outlet subcooling degree of reverse flow section should be in conformity with the requirement of HEI Standard.
空冷器设计应注意其逆流段出口的过冷却符合HEI标准的要求;
2·The check valve plays an important role to prevent the reverse flow in high pressure system.
止回阀在高压系统中起着关键的防逆流作用。