方法可用于各种通气壁或实壁风洞的亚跨音速试验。
It can be used for various ventilated wall or solid wall wind tunnel tests in subsonic or transonic ranges.
计算时不涉及洞壁的透气特性，可用于透气壁或实壁。
The corrections can be used for both ventilated and solid walls.
同实壁管材相比节省材料消耗，重量轻，便于施工、运输、储存。
Compared with a solid-wall pipeline, the double-walled plastic pipeline has the advantages of material consumption saving, light weight and convenient construction, transportation and storage.
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