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以吉林省中部玉米带黑土为供试土壤,研究了黑土不同剖面构型的结构特性。
Constructionpropertiesofdifferentsoilprofileconstitutions in black soil ofcornbeltinJilin were systemicallystudied.
旋翼设计包括桨毂构型、旋翼桨叶片数、旋翼直径、旋翼实度、翼型剖面等一系列影响直升机性能的因素。
Rotordesign iscomprisedof somefactorssuch ashubconfiguration,bladenumber, rotordiameter, rotor solidity andairfoil which haveeffects onhelicopterperformances.
旋翼设计包括桨毂构型、旋翼桨叶片数、旋翼直径、旋翼实度、翼型剖面等一系列影响直升机性能的因素。
Rotordesign iscomprisedof somefactorssuch ashubconfiguration,bladenumber, rotordiameter, rotor solidity andairfoil which haveeffects onhelicopterperformances.
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