在泥盆纪末期，30％的动物物种都灭绝了。Near the end of Devonian times, thirty percent of all animal life vanished.收藏矿物 、 古生物学 、 中泥盆纪 、 二叠纪到早期的侏罗纪和白恶纪.Mineral, palaeontology, middle devonian, permian to early jurassic, and cretaceous.泥盆纪(系)...
某种有机的润湿剂或消泡剂十分有助于形成可过滤的半水物.An organic wetting agent or foam suppressant is quite helpful in the formation of filterable hemihydrate.有机化合物的含量高常常促使生成泡沫, 导致消泡剂的耗量增多.High levels of organic compounds will frequently promote f...
有些人认为,果敢训练把亲切随和的人变成了诉苦者或是工于算计的操纵者.Some people think that assertiveness training turns nice, accommodating people into complainers or calculating manipulators....