辐射

The general method and microwave radiation Veratrum aldehyde synthesis comparison Abstract: Objective To investigate the synthesis methods Veratrum aldehyde and to study the synthesis of microwave radiation of the advantages and disadvantages of this new approach, to provide guidance for the production of meaning.

化学合成毕业设计翻译求解急！！用普通方法和微波辐射法合成藜芦醛的比较摘要：目的考察合成藜芦醛的方法，并研究微波辐射合成这种新方法的优缺点，为生产提供指导意义。

Veratrum aldehyde synthesis of many drugs intermediates, methyl aldehyde method for raw materials in Champlain, after dimethyl sulfate methylation available to 20% sodium hydroxide as the solvent, 10-11 in the PH value of the under the conditions of synthesis; microwave irradiation is the use of microwave radiation heating to replace the traditional approach to synthesis of a product of methylation reactions, this method does not require solvents, and less by-products, but still need to use 15% sodium hydroxide to adjust pH.

藜芦醛是许多药物合成的中间体，甲基化法以香兰醛为原料，经过硫酸二甲酯甲基化可得，以20%氢氧化钠为溶剂，在PH值为10-11的条件下合成；微波辐射法是利用微波辐射代替传统加热方式进行甲基化反应合成产物，这种方法不需要溶剂，并且副产物少，但仍需要用15%氢氧化钠来调节酸碱度。

Wide-brimmed hat and headscarf can decrease solar radiation by 50%,and stop it entering from the sides of the glasses.

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。

A wide-brimmed hat or cap will block roughly 50 percent of the UV radiation and reduce the UV radiation that may enter your eyes from above or around glasses.

宽边幅帽子将阻挡大约50％的紫外线辐射，减少紫外线辐射从眼镜的上面或周围进入眼睛的可能。

Its tunable ability has been studied by varying the FEL parameters, such as wiggler fields, guide field, and electron energies.

研究了在不同的入射电子能量、导引磁场和摇摆器磁场下激光器的辐射波长和辐射能量的变化，得到了连续调谐拉曼自由电子激光器的最佳工作参数。

Nature the whole temperatureses are high in the object of absolute zero(-273.15 ° Cs), because of molecular hot sport, all at without intermission to surroundings the space radiation include a red and outside wave band at inside of electromagnetic wave, the temperature relation between its radiation energy density and object matches the gram of Plank laws.

红外温度检测系统自然界一切温度高于绝对零度（-273.15°C）的物体，由于分子的热运动，都在不停地向周围空间辐射包括红外波段在内的电磁波，其辐射能量密度与物体本身的温度关系符合普朗克定律。

An acicular radiator is introduced and the corresponding relation between the length of the radiator and the input impedance is given based on calculation, which can provide reference for radiator selection.

本文中通过计算给出了一种针状辐射器的长度和输入阻抗的对应关系以及电场方向图，为辐射器的选用提供了参数依据。

It is shown that radiation impedance is a function of the product of wave number and side length,the sound power is greater and the adnexed mass is smaller in the higher frequency than those in the lower one respectively.

结果表明，方形活塞的辐射阻抗是波数和活塞边长乘积的函数，系统在高频段向外辐射的声功率比低频段大，高频段同振质量比低频段小。

In this paper,the biological effects of ~(60)Co-γradiation to Bombyx mori and Antheraea pernyi were studied,and the changes of blood protein were observed through electrophoresis.

中文摘要本试验用~(60)Co-γ射线对家蚕和柞蚕生物学效应进行了研究，通过电泳试验证实了家蚕和柞蚕经辐射后体内血液蛋白质的变化。用~(60)Co-γ射线对家蚕卵进行照射，辐射剂量在10～30 Gy之间。

Results The UV-B treatment caused the declines of chlorophyll content, soluble protein content and water content of leaves, besides, dose-effect was existed. The decline of 30 μW/cm^2 treatment was bigger than that of 15 μW/cm^2 treatment. The influences of UV-B radiation on carotenoid content and anthocyanidin content were similar; the change trends were declined firstly then increased. The UV-B treatment with two doses restrained the electron transport of PSⅡ, particularly; the inhibitory effect was biggest after treated 2h, and then this effect was declined in 4, 6 and 8 h, so the dose-effect was existed. The UV-B radiation with two doses restricted photosynthetic rate and the inhibitory effect increased with the increase of treatment time. The high dose treatment caused huge damage to membrane system, while the result of low dose treatment was not obvious.

结果］UV-B处理导致叶绿素、可溶性蛋白含量以及含水量都降低，且存在剂量效应，30μW/平方公分处理的降幅大于15μW/平方公分；UV-B辐射处理对类胡萝卜素含量的影响与花青素相同，均表现为先下降后上升的趋势，2种剂量间差异不大；2种剂量的UV-B处理均抑制了PSⅡ的电子传递，尤其是处理2 h的抑制作用最大，4、6和8 h的抑制作用有所缓解，且存在剂量效应；2种剂量的UV-B辐射均抑制了叶片的光合速率，随着照射时间的延长抑制效应加大；高剂量UV-B处理对膜系统的损伤较大，低剂量UV-B处理结果不明显。

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％。