天文

James is conversant with chronometer and geography.

詹姆斯精通天文和地理。

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。

"I would say the ice in the vicinity of the North Pole is primed for melting, and an ice-free North Pole is a good possibility," Sheldon Drobot, a climatologist at the Colorado Center for Astrodynamics Research at the University of Colorado, said by email.

"我想说的是在北极点附近的冰将要融化，并很可能出现一个无冰的北极点。"谢尔登多波特，一位在科罗拉多大学科罗拉多天文动力研究中心的气侯学家在邮件中说。

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。

Henot only carried forward his father Huang Zongxi's spirit of real learning but also consciouslyadhered to this principle. His achievement include: presentation of heliocentric theory andother western scientific achievements; records on temperature control in artificial incubation,selectively cultivating new strain of cockscomb end other folk technologies; and studies onastronomy and mathematics and biology, evolution theory in...

认为，黄百家不仅继承发扬其父黄宗羲的唯物的实学精神，而且在具体的学术尤其是科学研究中自觉地贯彻运用这种精神，从而取得较大成就──其中，关于西方科技新成就的介绍，关于我国民间科技新成果（如家禽人工孵化的看胎施温水、鸡冠花新品种培育的人工选择法）的记录，以及关于天文、数学和生物等学科的研究，在我国科技史上都占有重要位置。

The Christian era 1280 also used columnar scroll bearing on the astronomy instrument of Chinese ancient time.

公元1280年在中国古代的天文仪器上也使用了圆柱滚动支承。

Well, technology has come to the rescue of amateur star gazers like me.

于是，科技就来拯救我这样的业余天文爱好者了。

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 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。

Luoxia Hong arithmetic is 600 years earlier than the similar method put forward by the Indian mathematics and is 1600 years earlier than the theory of continued fraction put forward by the Italian mathematics.

落下闳算法比采用类似方法的印度数学家爱雅哈塔早600年，比提出连分数理论的意大利数学家朋柏里早1600年，它影响中国天文数学2000年。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。