And some minutely crystalline varieties, such as flint, may be opaque and of a waxy luster.某些细小的结晶变种, 如燧石, 可能是不透明的,并具有腊样的光泽.The flatting mechanism of low luster paint of organic solvent was introduced.介绍了有机溶剂型哑光涂料的消光机理.T...
His great books have added luster to the university where he teaches.他的巨著给他任教的大学增了光.The original purpose of mercerization was to improve the luster of cotton fibers.丝光的本来目的是改善棉丝维的光泽.And some minutely crystalline varietie...
I do a bit of teaching here and there.我零零散散地到处教些课。He could only understand a word here and there.他只能零星地听懂一两个单词。Here and there a drift across the road was wet and slushy.路上不时会有吹聚起的积雪，泥泞而湿滑。...
I simply cannot face grubbing through all this paper.我简直受不了要翻阅这么多文件。Farmers are grubbing up ancient varieties of crops.农民正在掘除自古以来就一直种植的各种作物。He found what he wanted by grubbing around in the library.他在图书馆乱翻一通终于找到了需要的资料....
Polyurethane elastomers based on glycols ( PEA, PPG PTMG ) , diisocyanate ( TDI ) and chain extender ( E - 300 ) were prepared.以多元醇 ( PEA, PPG,PTMG ),PDI, E300为原料,制备了 PU 弹性体.Polyether - type isocyanate prepolymers are pr...
Carbonation is the combination of carbonate or bicarbonate ions with minerals.碳酸作用是碳酸根离子或重碳酸根离子与矿物的化合作用.How to prevent concrete from freezing - thaw and carbonation is very important.研究如何防止混凝土冻融、碳化具有重要意义.The process of c...