You can't even see the source of the light that shines through. You can't tell if the light is from an artificial source or from the sun.
你不可以透过它看见树或人，连透射进来的光线源头也看不见，你不知道那光线是人工的，抑或是天然的阳光。
Cholecalciferol is produced by irradiation of 7-dehydrocholesterol with ultraviolet light either from the sun or from an artificial source.
胆钙化醇是7脱氢胆固醇经日光或人工来源的紫外线照射而产生的。
Cholecalciferol is produced by irradiation of 7-dehydrocholesterol with ultraviolet light either from the sun or from an artificial source.
胆钙化醇是7 ？脱氢胆固醇经日光或人工来源的紫外线照射而产生的。
We propose a numerical method using boundary element to model the electromagnetic filed induced by artificial source in the frequency domain with 3-D topography.
提出了一种用边界元法计算频率域人工源三维地形电磁场的数值模拟方法。
After a century as a primary source of artificial light these energy-guzzling bulbs are set to be replaced by light-emitting diodes (LEDs), powered by semiconductors.
在过去的一个世纪中，白炽灯泡一直为人造灯源的基本产品；但现在，耗能惊人的白炽灯泡注定将被由半导体驱动的发光二极管(LED)所替代。
An artificial leaf would use a reaction that forms part of the natural process of photosynthesis to turn sunlight and water into a clean fuel source.
“人造叶”将利用构成光合作用中部分自然过程的反应作用，将阳光和水变成一种清洁燃料的来源。
This time, the artificial lateral-line system could work out the general direction of the source and identify the pattern of the vortices.
这次人工侧线系统能够得出漩涡源头的大致方向，也能识别出漩涡的图形。
Built into the silicone are realistically placed and sized "blood vessels" that are connected to an artificial blood source that supplies the tissue with realistic bleeding.
这些位于实际的位置和真实大小由硅材料制成的血管被连接到一个能在出血的情况下供应人体组织的人工血源。
Sobel explained the device works even if a patient has been given artificial respiration because it functions regardless of air pressure source.
Sobel解释说该设备甚至可以在病人使用呼吸机时使用，因为它的功能不受气压的限制。
Abrasives source of their raw materials, there are two kinds of natural abrasive and artificial abrasives.
磨具按其原料来源分，有天然磨具和人造磨具两类。
The artificial seawater a source suitable for the growth of living beings is almost like the natural one.
极近天然的人工海水，适合生物生长的自然源泉。
Natural and artificial factors of grassland degradation in Maduo County in source region of Yellow River were analyzed in this paper.
对黄河源区玛多县草地退化的自然和人为因素作了深入分析。
Artificial light is best used as a supplement to your winter source if you bring your plants indoors during the winter months.
补光灯最好只作为冬季室内养殖时的补充光源使用。
Due to the intrinsic characteristics of artificial lighting source, its light output in all exists certain stroboscopic.
由于人工照明光源的固有特性，其光输出中都存在着一定的频闪。
The system is heavily reliant on the availability of sunlight, and for critical tasks or areas a back-up artificial light source is required.
此系统对阳光有很强的依赖性，对于一些极端的工程或地区，需备有备用人工光源。
Porous carbons were prepared using zeolite ore and artificial type X zeolite as templates, and sucrose as carbon source.
分别以沸石矿和人造沸石为模板、蔗糖为碳源、采用模板法制备了多孔炭材料。
The burial history and thermal history of the outcrop are modelled firstly in China, and the organic matter maturity ro % of subsurface source rock is predicted by artificial changing burial trace.
本文在国内首次模拟了野外露头的埋藏史和地热史，并通过人工改变埋藏轨迹，预测了盆地内中侏罗统地下烃源岩的有机质成熟度。
A technical concept, "reverse source quantity", based on artificial neural network, has been pointed out in order to carry out a numerical dynamic simulation on hydrocarbon diffusion process.
前言：提出实现烃类重气泄散态势的动态过程数值预测新构想———基于人工神经网络的“反求源”技术。
This mode attempts to adjust the camera's white balance to compensate for the loss of color underwater without the need for an artificial light source.
这个模式是通过调整白平衡来弥补水下色彩的丢失而不需要人工光源。
The source item of the equations is treated by means of even energy addition model, and the disconnection in the explosion field is coped with artificial viscosity model.
方程组中的源项由能量均匀加入法处理，爆炸场中的间断问题通过人工黏性模型处理。
Pilot tests were made on the improvement of source water quality in Taihu Lake through the construction of an aquatic and artificial media ecological system.
通过构建水生动物-人工介质新型生态系统来研究太湖水源地水质改善效果。
On the basis of those work, we continue to simulate and discuss the changes of heat island intensity caused by artificial heat source, aerodynamic roughness length and wind speed.
在此基础上，模拟并探讨了人为热源、风速、地面粗糙度等因素对城市热岛强度的影响。
The main source of artificial light consists of a series of track spotlights on either side of the store where the main display area is located.
人造光的主要来源包括一系列位于店内主展示区两侧的轨道射灯。
Introduce the characteristic of artificial joint, knowledge' s source and indicial content;
该文介绍了人工髋关节特点、知识来源和知识表示内容；
Using radial base function (RBF) artificial neural network and multi-source remote sensing imagery, the status of soil salinization in an area of north china is studied with satisfactory results.
文章应用径向基（RBF）人工神经网络，结合多源遥感影像对北方某地区耕地土壤盐渍化状况进行调查研究，取得了满意的效果。
It was proved that xenon arc is an ideal artificial light source.
经试验分析的结果，氙灯的确是一种理想的人工光源。
The artificial lake of golf course are not only the water landscape, but also an important source of irrigation water.
高尔夫球场人工湖水域既是球场的水景景观又是灌溉水的重要来源。
The free formaldehyde of the urea formaldehyde resin adhesive agent is the main pollution source of artificial board.
尿醛树脂胶粘剂中的游离甲醛是人造板中主要的污染源。
The free formaldehyde of the urea formaldehyde resin adhesive agent is the main pollution source of artificial board.
尿醛树脂胶粘剂中的游离甲醛是人造板中主要的污染源。
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