And in the future, the warm and dry climate would come into being more easily, then TSPV would decrease, and it would be adverse to agricultural growth.
而趋势分析表明,未来云南易出现“暖干型”气候,这不利于当地的农业生产。
Baekeland's original goal was to come up with a shellac and varnish substitute that, after being applied to a piece of wood, would harden into an insoluble state by a chemical reaction.
贝克·兰德最初的目标是找出虫胶和清漆替代品,加入一些木屑后,将硬化成不受化学反应的非溶解性固体。
Baekeland's original goal was to come up with a shellac and varnish substitute that, after being applied to a piece of wood, would harden into an insoluble state by a chemical reaction.
贝克·兰德最初的目标是找出虫胶和清漆替代品,加入一些木屑后,将硬化成不受化学反应的非溶解性固体。
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