During the Autumn Equinox, two classic colors stand out: the white of the clouds and the yellow of the crops. 此时,降水逐渐减少,气压梯度加大,暑热退却,空气澄澈,云朵如丝如缕,更具动感和色彩,似乎秋分时节的云才更有资格叫做“云彩”。
降雨量一词的英文表达就是quantum of rainfall。在1890—1900年之间黑体辐射研究的语境中,Arbeitsquantum(功的量)、Warmequantum(热的量)、Energiequantum(能的量)、das elektrische und magnetische Quantum(电与磁的量),这样的用法比比皆是,根本没有今天关于量子的内涵 ...
BEIJING, Sept. 18 (Xinhua) -- China's Ministry of Water Resources on Wednesday issued a Level-IV emergency response to flooding, the lowest among its four-tier system, in five provincial-level regions ...
BEIJING, Sept. 15 (Xinhua) -- Chinese agricultural scientists have developed a new variety of foxtail millet, setting a summer yield record, with the breakthrough expected to provide strong support ...