热和

Most cities are anthropogenic sources of heat and pollution.

大多数城市都是人为的热和污染的源。

The temperature of cold injury was abo ut 0 ℃ to 15℃,While hot injury would appear when temperature got to 36℃.These ind icat ors were varied in different species,and the greatest difference was the temper ature of cold injury.Growth would be poor in summer under full illumination,whi le part shading was beneficial.The best condition was 70 percentage of sh ading for Araceae and 50 percentage of shading for Agavaceae.The need for soil moistu re was strict.Most of species would grow normally in 65 to 85 percentage of soil m o isture.The characters responsed to illumination,temperature and soil moisture w e re consistent with their original ecologic environment.

其最 适生长温度在16-35℃，除酒瓶兰外，低于10℃时均表现生长停滞状态；寒害温度差异很大，天南星科为0-15℃，龙舌兰科为0-10℃，大多数植物在36℃会产生热害；光照对其影响较大，夏季这两科植物在全光照下长势差而在一定荫蔽的条件下有利生长，最佳荫蔽度天南星科为75％，龙舌兰科为50％；这两科植物对土壤中的水分含量要求较高，大多在土壤含水量70％以上才能正常生长，这些光、温、湿的反应特性与其起源地湿热和荫蔽的生态环境相吻合。

They are:1the realization of thermal-protection and seal at the same location,namely the seal performance in the high temperature environment during atmospherical re-entry;2the screen of TPS materials which have a synchronic-ablative characteristic between the glass and adjacent material of the window,to avoid the appearance of steps,and hence the over-heating caused by the disturbing of gas flow;3the analysis and calculation program for distribution of temperature in a complex structure consisting of a series of different materials including transparent materials;and 4the ground test program which can predict the performance of side-view window.

讨论了研制中国栽人飞船舷窗防热和密封结构的几个技术难题：1保证舷窗在返回的高温环境中防热与密封可靠；2保证窗玻璃材料与周围防热材料烧蚀同步，避免出现局部干扰热流；3进行多种异质材料，包括透明材料组成的复杂结构温度场的分析计算；4通过地面模拟试验准确地预测实际飞行条件下舷窗的防热与密封性能。

Its insecticidal active ingredients are sesquiterpenoid polyol esters with a dihydroagarofuran structure. These compounds are stable to light, heat, and pH, and exert a narcotic and toxic poisoning action. Celastrus angulatus contains a plant-origin insecticide with a unique mechanism of action. Celangulins, a 0.2% emulsifiable concentrate has already been developed for insect control.

是我国广泛分布的一种杀虫植物，其杀虫有效成分基本上均是以二氢沉香呋喃为骨架的多元酯类化合物，对光、热和pH值均稳定，对害虫主要表现为麻醉和毒杀作用，苦皮藤是一类作用机理独特的植物源杀虫剂，在其实际杀虫的应用上，已经开发出了0.2%苦皮藤素乳油。

The film drilled holes packaging, heat and calcium union treatment and different temperatures storage affect storage results and the physiological change rule in the mature process of Cerasus humilis Beg.

研究了薄膜打孔包装、热和钙处理结合和不同温度贮藏，对欧李的贮藏效果以及采后生理变化规律的影响，为欧李的贮藏保鲜技术提供理论依据。

Nitrogen screen, rare factive gas and nuclear heat are the mainly compos it ion.

其中稀薄气体对流热、辐射热和核沉积热是热负荷的重要组成部分。

Human hsp90 genes are usually constitutively expressed in most mammalian cell types and can be further induced by...

热休克蛋白90（HSP90）在正常生长条件下细胞内就有较高水平的组成性表达，并可被热和丝裂原双重诱导。

Heat transfer characteristics and flow behaviors of elliptic cylinders with different axis ratio k in crossflow are investigated experimentally.

对横掠不同长径比的椭圆管的换热和流动特性进行了研究。

The present invention can make the iron loss of oriented steel sheet stably reduce by 5%, and can prevent its surface coating from being damaged and curvedly deformed by means of heat-transfer and mechanical analysis and regulation of the parameters, including laser energy, power, pulse-width and scanning speed.

经传热和力学分析，调整激光能量，功率，脉宽，扫描速度等参数，实现对取向度硅钢片既稳定降低铁损5％，而又不发生表面涂层破坏和弯曲变形。

The results showed that the ultrasonic extraction is a rather ideal method of extracting red P. tha fortuneana pigment. Cyanidin3glucoside can be hydrolysised to aglycon cyanidin under the conditions of 90℃, 9％HCl and 11min.Silica gel thinlayer chromatography with developping agent benzene∶ethyl acetate∶formic acid = 2∶2∶1 is better to separate cyanidin. Cyanidin is stable to heat and light, unstable to Zn2+ and Fe3+ and Cu2+, insensitive to Co2+ and Bi3+, befitting to acidic condition.

结果表明，超声提取法是提取火棘红色素的较理想方法；矢车菊素3葡萄糖苷在90℃和9％盐酸中水解11 min，可以顺利得到其苷元矢车菊素；以苯、乙酸乙酯、甲酸(2∶2∶1)为展开剂的硅胶薄层层析法分离矢车菊素的效果较好；矢车菊素对热和光较稳定，在酸性条件下稳定，对Co2+和Bi3+不敏感，对Zn2+、Fe3+、Cu2+不稳定。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。