在煤岩的分类中,有腐殖煤和腐泥煤之分.Coal rock can be classified as humic and sapropelic coal.黄县煤田第三纪腐殖煤 、 藻烛煤、油页岩显微组分富含树脂体.Resinite is a rich n 1 aceral in Teriary humic coal, boghead - cannel coal and oil shale fromHuangxian Coalfield....
The cyanate Resin is modificated by styrene and divinyl benzene , which are called active diluent.以苯乙烯和二乙烯基苯作为氰酸酯树脂的活性稀释剂,得到粘度低、贮存稳定性好的改性树脂体系.Yttrium serves as an ideal non - magnetic diluent for the rare - earth metals....
一提到芒雅的名字她就禁不住哭了起来。She dissolved into tears at the mention of Munya's name.艾丽斯·芒罗以文风沉郁闻名。Alice Munro has a reputation for being a very depressing writer.蒂姆·芒顿成为新的副队长。Tim Munton becomes the new vice-captain....
Bur changes are quick and easy a simple twist of the handpiece locking ring.手柄上特殊设计的锁圈可以轻松更换锣嘴.Well, you have a point there, bur who's responsible for the theft?不错, 你的话有点道理, 但是谁应对这次失窃负责 呢 ?She might cry, bur it was ...