要确保隔膜完全就位。
人类的心脏是一个四室的双泵，左、右边由隔膜完全分离，两边再被分为上方的心房和下方的心室。
The human heart is a four-chambered double pump with its right and left sides fully separated by a septum and subdivided on Both sides into an atrium above and a ventricle Below.
我们知道，目前除了蝶阀和隔膜阀在结构上完全对称外，所有其他结构的调节阀都是不对称的。
We know that, with the exception of butterfly valve and the valve is completely symmetrical in structure, all other structures are asymmetric valve.
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