“Fell system”的概念、定义、翻译、参考文献-科学参考

单词	Fell system
释义	Fell system [`fel ´sis·tǝm] ^{CIVIL ENGINEERING} A method of traction intended for steep railroad slopes; a central rail is gripped between horizontal wheels on the locomotive.
随便看	threshold signal threshold speed threshold switch threshold treatment threshold value threshold velocity threshold voltage Threskiornithidae thribble thrip Thripidae throat throatable throat balls throat depth throat microphone throat of fillet weld throat velocity thrombin thrombinogen thromboangitis obliterans thrombocyte thrombocythemia thrombocytopenia thrombocytopenic purpura

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