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any of the nine large celestial bodies in the solar system that revolve around the sun and shine by reflected light; Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto in order of their proximity to the sun; viewed from the constellation Hercules, all the planets rotate around the sun in a counterclockwise direction

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The Sun's Parallax: The size of the earth as viewed from the Sun and expressed as an angle and generally taken to be 1/2 the diameter at the equator is 8.9008091 seconds of arc using 91848,817 miles as the mean distance to the sun and 3,963.4914 miles as the equatorial radius.

太阳的视差：作为太阳和地球的大小看作为一个角度表达，普遍采取的是1月2日在赤道，直径为8.9008091弧用平均91848，817英里秒距离太阳和赤道半径3，963.4914英里。

He makes a record of 2,500 planets visible in central China and the first star Chart of the country. Regarding the formation of the Lunar eclipse, he makes the correct interpretation that the moon itself does not give light but reflects the light from the sun, that the dark part of the moon is the part that receives no light and that the full moon is seen when the moon and the sun are in the opposite positions; when the moon moves to the same direction with the sun towards the earth, the lunar eclipse is seen.

记录了中原地区能看到的2，500颗恒星，并且画出了中国第一张完备的星图，正确解释了月食成因：月亮本身不发光，受到太阳的照射才反射出光来；月亮的黑暗部分，就是没有照射到太阳光的部分；月亮的位置和太阳相对的时候，就是满月；月亮运行到跟太阳同一方向的时候，就是月食。

If you wear board-brimmed hat and sun-glasses together, the board-brimmed hat and headscarf can screen 50% of sun radiation and reduce sun radiation from the edge of the sunglasses to your eyes.

宽边帽子和太阳镜一起戴。宽边帽子和头巾阻挡50%的太阳辐射，减少从镜片四周进入你眼睛的太阳辐射。

The picosatellite is characterized by small volume, light weight and low power consumption. Based on these characteristics, a designed micro sun sensor is used to measure the sun vector which is then compared with the sun vector calculated from the orbit propagator. In such a way the picosatellite attitude angle can be obtained.

首先针对皮卫星体积小、重量轻、功耗低的特点，采用设计的微型太阳敏感器测量太阳矢量，与轨道演化计算获得太阳矢量相比，该方法更适合获取皮卫星姿态角度信息。

Be in from the ground in the atmosphere advection layer of 50 kilometers of 15 ～, centered the ozone gas of on the earth 90%, although its chroma never exceeds 1/100000, all concentration rises to also have a even thinner than sole only, but it assimilated opposite substance effectively harmful, wavelengh is less than the UV-C of sun ultraviolet ray of 295nm, and opposite content hurtless, wavelengh is more than the UV-A of sun ultraviolet ray of 320nm to make them all pass however, opposite content has certain harm, wavelengh is in the UV-B of sun ultraviolet ray of 295 ～ 320nm also is absorbed for the most part.

在离地面15～50公里的大气平流层中，集中了地球上90%的臭氧气体，虽然其浓度从未超过十万分之一，全部集中起来也只有比鞋底还要薄的一层，但它却有效地吸收了对生物有害的，波长小于295nm 的太阳紫外线 UV-C，而对生物无害的，波长大于320nm 的太阳紫外线 UV-A 却让它们全部通过，对生物有一定危害，波长在295～320nm 的太阳紫外线 UV-B 大部分也被吸收。

MATERIALS: Experiments were performed at the State Key Laboratory of Ophthalmology, Sun Yat-sen University from September 2006 to Januaiy 2007. 218 pterygial paraffin specimens following clinical and pathological diagnosis were obtained from Pathology Lab of Zhongshan Ophthalmic Center, Sun Yat-sen University.

材料：实验于2006-09/2007-01在中山大学眼科学国家重点实验室完成。218例经临床及病理诊断为翼状胬肉的石蜡标本均来自中山大学中山眼科中心病理室。

The result would be used in tobacco breeding.4 SRAP technology is used to study the genetic differences among different types of tobacco, including flue-cured tobacco, oriental tobacco, maryland tobacco, burley tobacco, and air/sun cured tobacco, five pairs of primer combinations which can amplify characteristic bands has been screened. Among the five combinations, two of them (SF25*SR2 and SF3*SR26) can distinguish air-cured tobacco including maryland tobacco and Burley tobacco from the other cultivated forms; SF20*SR14 can distinguish sun cured tobacco including oriental tobacco and sun-cured tobacco; SF16*SR14 can distinguish flue-cured tobacco and air-cured tobacco, and SF22*SR14 can distinguish DBJ599 with specisl aroma and the other flue-cured tobacco.5 8 varieties , which represent the different types of tobacco, are divided into 3 groups. I: G-28, II:DBJ599、MD40、By21, III: Basma、Sumsun、XNS、QCT. The cluster analysis result es consistant with experience evatuation.6 Anorthogonal design was used to optimize a ILP-PCR system with 5 factors (DNA, Mg2+, dNTP, primer and Taq polymerase) at 4 levels.The result showed the optimized ILP-PCR system for Nicotiana tabacum L. was: 2uL10×PCRbuffer, 20ng template DNA, Mg2+ 2.0mmol/L, dNTP 150umol/L, primer 0.3umol/L, Taq DNA polymerase 1 U in a total of 20uL reactionsolution.

研究结果可作为烤烟与香料烟类型间的杂种鉴定利用的实验与理论依据。4、利用SRAP标记技术，研究和分析了烤烟、晒烟、晾烟、白肋烟、香料烟等不同栽培类型间的基因型差异，初步筛选出了能够在分子水平上反映不同烟草类型差异的特征性标记带：晾烟MD40、Ky17、Burley21、TN90基因型共有的特征带有两对引物组合，分别为SF25*SR2和SF3*SR26；晒烟小牛舌、青梗、小花青和香料烟Sumsun、komotini Basma、Xanthi Basma共有的特征带引物组合为SF20*SR14；NC89、K326、G-28、大白筋和MD40、Ky17、Burley21、TN90共有的特征带引物组合为SF16*SR14，烤烟中大白筋599的特征带引物组合SF22*SR14.5、利用61对SRAP引物组合，研究了普通烟草不同类型间的亲缘关系，将普通烟草类型间8个不同供试材料划分为3类别。I：烤烟类型G-28II：白肋烟类型(MD40、By21、大白筋599III：香料烟类型(Basma、Sumsun、小牛舌、千层塔)。

A reduction in the same time, Mercury Venus Mars Earth swallowed by the sun, there are four planets from the outside in the absorption of small satellites to comets and the sun burning more energy (like a sun lamp flame, as long as often Tim lamp oil, it is not easy to extinguish the flame).

在一缩的同时，水星金星地球火星被太阳吞了，还有从外面4个大行星中吸来小卫星彗星，增加太阳燃烧的能量（太阳像一盏油灯的火焰，只要常给油灯添油，火焰是不容易熄灭的）。

Avoid sun - In order to protect your face from crows feet, you need to make sure that your skin is not getting exposed to the sun as the UV rays of sun are also responsible for the production of free radicals.

避免阳光——为了保护你的脸防止鱼尾纹，您需要确保您的皮肤不要暴露在太阳下，因为太阳的紫外线，更是为自由基的产生的原因。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了