查询词典 astronomical photometry

astronomical telescope ; celestial radiation ; electromagnetic wave

天文望远镜的技术一直代表着当时的技术发展的最高水平。本文将通过

It deals with the invention and development of time-keeping apparatus in our country during a historical period of some three thousand years, tracing this development from remote antiquity with its sundial and clepsydra making use of the shadow of the sun down to the Dynasties of Han, Sui, Tang and Sung with their water-powered astronomical clockworks insta...

内容论述我国古代三千年左右有关计时器的发明和发展，自远古利用日影的圭表和日晷起，中间经汉、隋、唐、宋等朝代，附装在水力天文仪器上的水力天文钟，都采用了齿轮和凸轮的传动，即已都属于机械性。

It deals with the invention and development of time-keeping apparatus in our country during a historical period of some three thousand years, tracing this development from remote antiquity with its sundial and clepsydra making use of the shadow of the sun down to the Dynasties of Han, Sui, Tang and Sung with their water-powered astronomical clockworks...

自远古利用日影的圭表和日晷起，中间经汉、隋、唐、宋等朝代，附装在水力天文仪器上的水力天文钟，都采用了齿轮和凸轮的传动，即已都属于机械性。元代郭守敬以后，到明初的詹希元，更发展到独立时钟机构，並有了指针和表盘。可是近四百年，即自明代万历年间，西洋的自鸣钟传来我国，我国在计时器方面的工作，始终在模制阶段，自己的发明遂归于停顿。那次会议闭幕以后，会中曾用英文出版一次，我国1956年12月，《天文学报》4卷2期用中文出版一次。现在根据一些新资料，重新加以增删和改正。

The method of quantitative calculating of knife edge testing for astronomical mirror polishing is discussed including shadow image CCD real time collecting, image processing and the method of quantitative calculating of clitellum error.

主要介绍天文镜面加工中的刀口定量检验技术，包括阴影图像CCD实时采集、图像处理、定量计算。

Although Xing Yunlu pointed out the disadvantage in the Shoushi Computus and the Datong Computus at the same time, he deemed that the Shoushi Computus is the most exact calendar in the Chinese traditional ones. Therefore, Xing Yunlu believed on some degree that he would realize the revival of the traditional calendrical astronomy through resuming some astronomical algorithms of the Shoushi Computus.

指出，邢云路虽然同时指出了《授时历》和《大统历》中存在的一些问题，但是他还是认为《授时历》是中国古代历法中精度最高的一部历法，所以邢云路在很大的程度上将历法复兴的希望寄托在对《授时历》的恢复上面。

We also discussed the social background while Zhu Zaiyu (1536-1600) and Xing Yunlu brought forward the suggestion of reforming the traditional calendar. Zhu Zaiyu protested compromising the Shoushi Computus and the Datong Computus to make a new calendar, but he failed in carrying out his plan of reforming the calendar. Xing Yunlu's suggestion of reforming the traditional calendar was once laid aside, but he finally obtained the chance to reform the traditional calendar in the official Astronomical Bureau of the Ming Dynasty after a few years.

对万历年间朱载堉(1536-1611)和邢云路奏请改历的背景进行讨论，指出：朱载堉和邢云路奏请改革历法与国家纂修正史的需要紧密联系，朱载堉主张对《授时历》和《大统历》进行折衷进而编制新的历法，但是他的改历建议最终没有获得采纳；邢云路主张对《大统历》进行改革，虽然曾一度受到挫折，但最终得以进入钦天监参预传统历法改革。

The law of conservation and transformation of energy is the chief basis of physical,astronomical and chemical reasoning

能量守恒和能量转换的定律，不仅是工程实践的主要根据，而且也是物理、天文以及化学等方面推理的主要根据。

The law of conservation transformation of energy is the chief basis of physical,astronomical chemical reasoning as well as of engineering practice.

能量守恒和能量转换的定律，不仅是工程实践的主要根据，而且也是8tt t 8。

The law of conservation and transformation of energy is the chief basis of physical, astronomical and chemical reasoning as well as of engineering practice.

能量守恒和能量转换定律不仅是工程实践的主要基础，而且也是物理、天文以及化学等方面的主要基础。

But now, the crystalloid has been detected two astronomical unit distances away from earth, and it is flying to the earth accurately with its precipitous unnatural orbit.

但现在晶体在两个天文单位外被探测到，它沿一条陡峭的绝非自然形成的轨道精确地飞向地球。

A carrier gas such as nitrogen is directed through line 20 and valve 22 to connect with line 26 and mix with the gas sample.

如氮气之类的载体通过管线20和阀22引入，与管线26相通，与气体样品混合。

But for the most part, knaves and parasites had the command of his fortune

然而支配他的家产的大多是恶棍和寄生虫。