state boundary
美
英 
例句
A reasonable criterion of vortex ring state boundary for helicopter is acquired based on model rotor tests.
通過模型旋翼試驗得到了合理的直升機渦環(huán)邊界判據(jù),并由此計算得到了直升機通用渦環(huán)狀態(tài)邊界。
We crossed the state boundary at midnight.
我們在午夜走過了州界。
Flight Test Investigation of Helicopter Vortex-Ring State Boundary
直升機渦環(huán)狀態(tài)邊界的飛行試驗研究
Helicopter Vortex-Ring State Boundary and Flight Safety
直升機渦環(huán)狀態(tài)和改出