英语词汇hourglass structure怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	hourglass structure
释义	hourglass structure 简明释义砂钟构造，沙漏结构网络释义 1 ?砂钟构造 hourglass structure 砂钟构造... 双语例句 1 This dense disc may be the origin ofthe hourglass structure of the nebula. 这个浓密的尘埃盘可能是沙漏状星云的起源所在。 2 The structure and the working principle of a new kind of hourglass worm gearing, which is called non-backlash hourglass worm gearing, are introduced. 阐述了一种新型环面蜗杆传动——无侧隙双滚子包络环面蜗杆传动的结构和传动原理。
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