It is all around with iron wire, guardrail window and door.旅馆四周被带刺的铁线围着, 窗户和门口都有围栏.Highway guardrail, sports venues fence, the road network of green belt protection.高速公路护栏, 体育场所围网, 马路绿化带防护网.Their car crashed into a guard...
杂原子数越多, 分子被氧化的程度越高.The larger the number of heteroatoms, the more highly oxidized the molecule.关键反应为底物控制的不对称杂原子共轭加成反应.The key step was a substrate controlled asymmetric heteroatom conjugated addition.杂原子烯反应是该反应的重要组成部分.Th...
The modification of gear is a principal method for improving performance meshing.齿面修形是提高齿轮副啮合性能的重要手段.Exact modeling of gear teeth is based on meshing theory.摘要根据齿轮啮合原理,建立了轮齿的精确齿形.Meshing method is one of the key factors ...
这种两面周旋的态度在整个寄居海外运动中极为明显.This dual tug is apparent in the whole movement of expatriation.我朋友寄居在我叔叔家.My friend lodges in my uncle's house.他暂时寄居在伯[叔]父家.He sojourned with his uncle....