英瓦合金 的英文怎麼說
中文拼音 [yīngwǎgějīn]
英瓦合金
英文
invar-
It was in the section included between this range and the rocky mountains that the american engineers found the most formidable difficulties in laying the road, and that the government granted a subsidy of forty - eight thousand dollars per mile, instead of sixteen thousand allowed for the work done the plains
美國的築路工程師們曾在這個包括瓦薩奇群山和洛磯山脈的地區遇到過嚴重的困難。因此，美利堅合眾國政府在這一段路的工程上付出的輔助金，每英里竟達四萬八千美元，而在平原地區每英里只需一萬六千美元。
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