太阳光

Solar energy in photovoltaic system is a mode of electric power generation directly which use solar cell of electronic device of semiconductor to generate power by absorbing solar radiation energy effectively and make it to change electrical energy,it is a principal way of dealing with energy shortage and protecting the environment against pollution to exploit and make use of solar energy which is regenerative and clean to generate electrical energy.

太阳能光伏发电是利用太阳能电池这种半导体电子器件有效地吸收太阳光辐射能，并使之转换成电能的直接发电方式。开发利用太阳能这种可再生的清洁能源发电是解决能源短缺、保护环境的重要途径。

The photocatalytic activities were examined by degradation of alizarin red in sunlight and ultraviolet light.

对茜素红溶液进行了在紫外灯及太阳光下的光催化降解，测试催化剂的催化活性，确定催化剂制备条件。

The stability of aloin decreased with the increase of temperature and heating time. However, the absorbency of aloin did not change with time under room temperature (20℃). The aloin was sensitive to light, and the aloe juice showed a yellowish green sediment in 2 hours after exposed to sunlight. The stability of aloin declined when the pH value arose. The aloe juice was more stable under lower concentration of sodium chloride and sucrose.

结果表明：加热的温度越高，时间越长，芦荟苷的热稳定性越差，而在室温下(20℃)芦荟苷的吸光度基本不随时间改变；芦荟苷具有光敏性，在太阳光照射下，2小时后便出现黄绿色沉淀物；芦荟溶液随着pH的升高，其稳定性下降；低浓度的氯化钠和蔗糖对芦荟汁液稳定性的维持比高浓度的效果明显。

The structural parameter including span, height of north wall, angle of elevation of north slope, angle of south surface, project width of south surface, height of the greenhouse, shape of south surface were optimized.

日光温室是一种在室内不加热的温室，即使在最寒冷的季节，也只依靠太阳光来维持室内的温度水平，以满足蔬菜作物生长的需要[1]。

The direct photolysis of Anilide herbicides acetochlor in aqueous solution irradiated by high pressure mercury lamp and sunlight was investigated.

本文以高压汞灯、太阳光为光源，研究了酰胺类除草剂乙草胺在水溶液中的光化学降解。

Based on the traits of the aspherical lens, the sunlight was focused on a very small spot, and then it was transferred into a plastic fiber by an aspherical lens and a selfoc lens. A formula for calculating the optimal length of selfoc lens is presented. The optimal assembly of the aspherical lens and selfoc lens was implemented by the aid of this formula. Therefore, sunlight is coupled into a plastic fiber efficiently.

根据非球面透镜垂轴球差小的特点把太阳光会聚到很小的光点，再利用长度约为1/4节距的自聚焦透镜改变光线的数值孔径使其满足光纤的数值孔径，通过一个计算公式来计算最佳的自聚焦透镜长度，实现非球面透镜和自聚焦透镜的最佳组合，把太阳光以较高的耦合效率耦合进塑料光纤。

In this paper, the design of the Automatic Sun Traces is introduced.

本文介绍了自动太阳光追踪器的设计，它是一种用于对太阳光进行自动追踪的装置。

Caption:: Saturn's icy rings shine in scattered sunlight in this view, which looks toward the unilluminated northern side of the rings from about 15 degrees above the ringplane. The Sun currently illuminates the rings from the south.

图中的土星环是由卡西尼号探测船以环面15度高的角度拍摄，由於现时太阳光由环的南面照射到环，现在所见的环是环的北面，不是被太阳光照射的一面。

In addition, the recombination for large numbers of charge carriers would occur in the volume or on the surface of TiO_2. Therefore, the extension of the photoactive wavelength region of TiO_2 into the visible region and improvement of quantum efficiency are desirable for popularizing more TiO_2 photocatalyst, especially under solar light for industrial areas or poor interior lighting illumination in living spaces.

但纳米TiO_2具有较宽的禁带宽度，只能吸收太阳光中5%左右的紫外线，而太阳光中近45%的可见光在处理污染物中却得不到有效利用，因此太阳能的利用率较低，这就限制了其实际使用范围；另外，TiO_2半导体载流子的复合率较高，因此量子效率较低。

Suwannee river humic acid was photooxidated using a Suntest CPS solar simulator to examine the effects of dissolved oxygen levels, the wavelength of incident light and the concentration of Fe on the photoproduction of DIC.

利用模拟太阳光对Suwannee河腐植酸的光氧化过程模拟，研究了溶解氧浓度、模拟太阳光波长范围和铁浓度对溶解无机碳产量的影响。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。