Here the gas velocity corresponds to a Mach number of one, denoting that the flow velocity is equal to the local speed of sound of the particular gas.

在这里，气速对应到一个马赫数之一，指该流速等于当地音速的，特别是天然气。

youdao

Here the gas velocity corresponds to a Mach number of one, denoting that the flow velocity is equal to the local speed of sound of the particular gas.

在这里，气速对应到一个马赫数之一，指该流速等于当地音速的，特别是天然气。

youdao