云的催化是指将催化剂颗粒打入云中使云中的水蒸汽凝聚成水滴,从而实现降雨的技术,催化剂颗粒通常为碘化银。
Cloud-seeding is a technique to enhance rainfall by introducing particles - often silver iodide crystals - into cloud systems, to help condense water vapor into raindrops.
这已带来了资源利用不足的问题,此问题成了云的有力催化剂。
This has led to the problem of under-utilization of resources, and this issue is a huge catalyst for the cloud.
如果云中没有一定的湿度,没有适合的云来作催化,科学家就很难引发降雨。
Without some moisture already in the system, and without the right clouds to seed, there is little that scientists can do to induce rain.
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