Its main components include propane, butane and butylene.主要成份是丙烷 、 丁烷、丁烯等.Catalytic oligomerization of remain butylene is a way for enterprises to rebottle andpotentialities for more benefits.剩余丁烯催化齐聚是企业消除瓶颈、挖潜增效的途径.By m...
That which is you dwells above the mountain and roves with wind.你们的真我居于高山之巅,与风道游四方.Dear of, my heart roves around between the point of a knife and the wave point.亲爱的, 我的心在刀尖和浪尖之间游走....
Leather overshoes were put on the horses' hooves to stop them marking the turf.马蹄上套了皮套子,以免弄脏赛马场。Discussed the current situation of industry of our country overshoes.论述了我国胶鞋行业的现状.Make method and cardinal principle of...