Based on requirements of cotton HVI(high volume instrument)testing psychometric room, presents an idea of constant temperature and humidity system design and separate setting and control.
根据棉花HVI检验恒温恒湿环境室的要求,提出了恒温恒湿系统方案及温湿度分体设置和单路分控的设计思想。
By investigating the mechanism of camera imaging process in star field,several aspects of an imaging system,such as the optic system,sensor characteristics and aperture diffraction process,were modeled.
在分析星空环境下相机成像机理的基础上,从相机光学系统,光感受器工作特性和光圈衍射过程三个方面对星空环境下的成像系统进行了建模。
Another expectation, which Hubble overturned, was that the circumstellar disks would be deeply embedded within their parent clouds and would therefore be impossible to see.
另外有一个被哈伯推翻的猜测，是因为环绕恒星的气盘深藏在其母云气之中，所以无从窥其究竟。
Smaller groups of stars called globular clusters often surround spiral galaxies.
称作球状星团的小型恒星团体经常环绕在旋涡星系周围。
1 the clouds from which stars are born are as dense as the space around earth.
孕育恒星的星云的密度和环绕地球的太空的密度是一样的。
the time for the earth to make one complete revolution around the sun, relative to the fixed stars.
以恒星为基准测定的地球在环绕太阳的轨道上公转一整周的时间。
Newborn stars, for instance, are surrounded by disks of leftover material.
举例来说，新生的恒星四周会环绕著剩馀物质所构成的气盘。
The sun is a star around which the earth moves .
太阳是一个被地球绕着走的恒星。
The disrupted sunlike star could form a massive disk in orbit around the dwarf.
瓦解的类太阳恒星可能在环绕白矮星的轨道上形成一个质量巨大的盘状物。
It is not too difficult to imagine that on some other planets orbiting around other stars the same process has gone on.
不难设想，在环绕着其他恒星运行的一些行星上，也进行着同样的演变过程。
A satellite's circle around the earth.
卫星绕地球的环形轨道
It is probable that life animates all the planets revolving round all the stars.
生命为一切围绕恒星旋转的行星注入活力。
Mars and Venus are planets of the sun.
火星和金星是环绕太阳的两个行星。
The first rocky worlds astronomers detect circling other stars could resemble Inferno more than Earth.
天文学家发现第一个环绕著其他恒星的岩石世界，可能就像我们所说的炼狱。
The stars of the galaxy must revolve about its center if the galaxy is not to gradually collapse.
如果星系不致于逐渐坍陷的话，星系中的恒星必须绕其中心旋转。
This is a very large circular collection of stars and gas that surrounds our Milky Way galaxy.
这是一个围绕银河系的恒星及大气圈群体。
2 stars turning round each other form a binary star
由彼此环绕的两个星组成双星
binary star (two stars that revolve around a common centre)
双星（环绕一共同中心旋转的两颗星）.
Life could not exist on a planet circling such a dead star.
围绕这样一颗无生命的恒星运行的行星上不可能有生命存在。
