Conservation is an issue which gets a lot of attention these days — whether it means preserving old buildings, or protecting the environment.资源保护是目前备受关注的问题——不管它指的是对古建筑的保护，还是对环境的保护。These two buildings typify the rich extr...
The authors show that the hyperboloid of one sheet and the hyperbolic paraboloid are ruled surfaces.作者证实:单叶双曲面和双曲抛物面是直线曲面.The mathematical model of the hyperboloid twist drill was introduced.介绍了以旋转单叶双曲面作麻花钻钻尖后刀面的数学模型.The...
临床上,这常表现为多尿期.This is frequently noted clinically as a period of diuresis.生酮酮体的形成, 如多尿症中.The formation of ketone bodies, as occurs in diabetes.症状包括了症状包括多尿、尿频、口渴 、 疼痒、饥饿 、 消瘦、软弱.Symptoms include increased urine output, thi...
The electron microscope uses a beam of electrons to produce images at high magnifications.电子显微镜利用电子束形成高倍影像。The structure of molecules can be seen under an electron microscope.分子的结构可在电子显微镜下观察到.The electron microscope uses...
矿物往往埋藏在地层深处.Minerals are often found deep in the ground.在圈定地层过程中,植被往往具有很大的作用.The role of vegetation in outlining formations is often of great help.我们把它们当作实际上的地层单元来考虑,它们主要由岩浆沉积作用所产生.We regard them as actural stratigraphic...