Getting ready for a water 下水前的准备
The loss volume of water is very small, without needing to change much water, and the energy for getting water and maintaining temperature is very little.
水的损失量非常小,无需大量换水,取水及维持温度所需能量很小。
Mougin and his team must also prove that such operations could become cost-effective ways for getting water. The $11.5 million price tag for the one-shot operation is far from that, Simard said.
摩根和他的小组还必须证明这种方式对于获取水来说是合算的,而按照目前计划,一次就要花费1150万美元,这可是个大价钱。
Though air pollution is by far the most menacing for humans, water quality has similarly been getting better.
虽然空气污染是到目前为止对人类的最大威胁,但是水质量已经类似地变得更好。
应用推荐