tie down screw 中文意思是什麼
tie down screw
解釋
鎖緊螺桿-
During the tie - down test, the ground screw came off with the rope, the humming bird tipped over and both its rotors were broken
在地面系留試驗中,地面人員不慎脫手,該機翻倒在地面,兩套旋翼都折斷了。
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