从历史学家普林尼(公元23 - 79年)的记述中清楚知道罗马人也有点火镜。
It was clear from the accounts of the historian Pliny (23-79 A. D.) that the Romans also possessed burning-glasses.
从历史学家普林尼(公元23 - 79年)的记述中清楚知道罗马人也有点火镜。
It was clear from the accounts of the historian Pliny 23-79 a.
纽约厄普顿布鲁克林国家实验室物理学家米林德‧迪万说，DUSEL终止或者说严重拖延，将掀起科研圈的涟漪。
The death of DUSEL, or a serious delay, would haveeffects that would ripple across the scientific community, saysMilind Diwan, a physicist at Brookhaven National Laboratory inUpton, New York.
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