布朗-夏普线规 brown and sharpe gauge; browne and sharpe gauge
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例句与用法
For decades , many geologists assumed that a series of distinct eruptions over millions of years must have occurred to produce the extensive bishop tuff 数十年来,许多地质学家认为,过去数百万年必定发生了一连串的个别喷发,才能造成广大的毕夏普凝灰岩。
Based on these and other experiments and field observations from the 1990s , geologists now think that the bishop tuff ? and probably most other supererupted debris ? was expelled in a single event lasting a mere 10 to 100 hours 根据这些实验,以及自1990年代就开始进行的野外观察,目前地质学家认为,毕夏普凝灰岩是一次持续约10 ~ 100小时的喷发而形成,其他大多数的超级喷发很可能也是如此。