The atmosphere consist of more than 70 % of nitrogen.大气中含有70%以上的氮气.Every tonne of coal contains, on average, 30 kilograms of nitrogen.每吨煤平均含30公斤氮.The plant requires nitrogen in order to make proteins.植物需要氮以便制造蛋白质....
Non - basic nitrogen - containing series include pyrroles, indoles, carbazoles and benzcarbazoles.不含碱性氮的化合物包括吡咯 、 吲哚 、 咔唑和苯咔唑.Nitrogen trifluoride ( NF 3 ) is a toxic, colorless, odorless, nonflammable, oxidizing compres...
镀锡钢板实质上是中间层为带钢的夹层体.Essentially a sandwich in which the core is strip steel.一旦破碎, 中间层仍对建筑物起保护作用,直至玻璃被换掉.Once fragmentation, interlayer can still protect the building until it is replaced.而关于工作流, 中间层通过两种方式来实现.In the case o...
老虎悄然穿过矮树丛。The tiger prowled through the undergrowth.笼子里的老虎发出了令人毛骨悚然的吼声.The tiger in the cage gave a thrilling cry.森林里老虎数量最多.There is a preponderance of tiger in the forest....
Conclusion: Total laminectomy destroyed the stability of lumbar spine.结论: 全椎板切除术极大破坏腰椎稳定性.Methods: Discontinous laminectomy and non - trauma incision of spinal ganglion is the main surgical technology.方法: 致压物摘除、神经根节部的无创减...