four finned 中文意思是什麼
four finned
解釋
裝有十字形尾翼的-
The finite element solutions of natural frequencies of low - finned tube were obtained in four - constraint mode by simulating work condition of tube in heat exchanger
採用共振法對低翅片管在上述四種約束模態下的固有頻率進行實驗測試。
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