ƶʽվһʯ豸Ҫұ𡢻ġˮȾҪǨҵϼӹڸٹ··ˮ繤̵ʯϵҵûɸݼӹԭϵ࣬ģͳƷҪIJͬöʽƶʽվչ˴ҵ
Ҫұ𡢿ɽġ··ˮҵԸֿʯʹ״ϵϸ顣ϵĿѹǿΪ2000Kg/cm2鿹ѹǿȲ320Mpaϡ