蝴蝶多种鳞翅目类昆虫，特征为身体细长，触须突出，有四个通常是彩色的宽大的翅。
Any of various insects of the order Lepidoptera, characteristically having slender bodies, knobbed antennae, and four broad, usually colorful wings.
脉翅目脉翅目的食肉昆虫，如蚁狮或鱼蛉，有四个网状翅脉的翅膀和适于咀嚼的口器。
A carnivorous insect of the order Neuroptera, such as the ant lion or dobsonfly, having four net - veined wings and mouthparts adapted for chewing.
本文主要论述四种叉排钢制矩形翅片椭圆管簇的传热及阻力试验研究结果。
This paper mainly presents the results of experiments on heat transfer and pressuse drop of air flowing across four types of elliptical Finned-Tube banks .
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