这个城市小型湖泊星罗棋布,有天然的也有人工的。The city is dotted with small lakes, natural and artificial.现在有很多算法来生成人工的地形.There are also lots of algorithms to create artificial terrains.在英文中Artificial这个词有两个含义,一是人工的,二是假的.There are two meanings ...
The typical K - F reagent has disadvantage of high poisonousness and pyridine malodor.经典K-F试剂缺点是毒性大,且具有吡啶的恶臭.This preparation uses dialkyl imidazole salt, alkyl pyridine salt or caprolactam and fatty acid as reactant.该方法...