The new technology for the preparation of cryolite from fluosilicic acid and ammonium hydrocarbonate is introduced.介绍了氟硅酸、碳酸氢铵制备冰晶石的新工艺.Bites suction cup the toxin and apply 3 % ammonia solution or 5 % sodium hydrocarbon...
" To Camber Company, please . It's on 32 nd avenue . "去 坎培克斯 公司. 在第32街上.Compared with even die drawing, camber die - drawing's limit drawing coefficient is detracted, so efficiency is increased.曲面凹模拉深与平端面凹模拉深相比...
Bomb tests resulted in the annihilation of the atoll.原子弹试爆毁灭了那个珊瑚岛.Pudong and Atoll Reef aquarium which is worth more to ah?那个海洋馆与浦东的水族馆哪个更值得一去啊?An atoll is a ring - shaped island that encloses a central lagoon.环礁是一座环状的岛...