For a system, Hamiltonian is invariant under any translation of spatial coordinates.对于一体系, 哈密算符在任何空间坐标变换下是不变的.The results of this part are obtained by model hamiltonian.这一部分的推导采用的是模型哈密顿量.Aim The Hamiltonian is transforme...
A variety of conifers and hardwoods makes up the bulk of the vegetation.大部分植被由各种针叶树类和阔叶树类构成.This region contains areas which are prinarily covered with either high density conifers or meadow hardwoods.该地区,主要的植被覆盖是高度的针叶树类...
Now let us consider crystals such as diamond or sapphire.现在让我们考虑象钻石和蓝宝石这样的晶体....white snow and sapphire skies.皑皑白雪和湛蓝的天空One of the new Sapphire Gold brooder, aged about 4 years.一尾大约四岁的新蓝宝石紫蓝底过背金种鱼....a sapphire engagemen...
在更多人质获得自由之前他们期望看到对方也有相应的表示。They expected a reciprocal gesture before more hostages could be freed.大多数空缺属于高层职位，要求具备相应的资历。Most vacancies are at senior level, requiring appropriate qualifications.对讲机发出嗡嗡声，他按下了相应的开关。The inte...
一定准光间所带来的误差是包括在表现透光率中的一种系统误差.The error introduced by a finite collimation angle is a systematic one in apparent transmission.低粘度, 固化快, 低气味, 高折射率和透光率.Low viscosity, fast curing, low odor, high index and euphotic index.注:制...