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- 与 have a temperature 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The results of The biological characteristics of Semanotus bifasciatus have showed: 1. The hole of Semanotus bifasciatus associated with a certain temperature.2.The main damages of Semanotus bifasciatus located oriental arborvitae tree trunks, while above 3m parts are not damaged. 3.The Mating numbers of Semanotus bifasciatus are not unique ,and the duration varied due to the different individuals, the average duration is 3.2 minutes . 4. when are flying , they are more sensitive to blue and green; while moved, they are more sensitive to black.
对双条杉天牛的生物学特性的研究结果表明:双条杉天牛出孔与温度有一定的相关性,温度过低,双条杉天牛停止出孔;对于树高7m以上的树,主要危害侧柏基部的1-3m的主干部分,3m以上基本不受害;双条杉天牛需要经过一段时间的抱合才能交尾,交配对象不专一,雌雄成虫均可以多次交尾,交尾时间长短不一,平均3.2min/次;飞行时对蓝色和绿色较为敏感,爬行时对黑色较为敏感。
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Environmental protection: Does not have the freon, the collection eliminates the taste, the air change, well ventilated, the temperature decrease, the attemperation in a body.
环保:无氟利昂,集除味、换气、通风、降温、调节温度于一体。
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The result showed that we have established a ITS-PCR system most suitable for Buxus sinica var. parvifolia, which came out total volume 50μL reaction system, was as follows: 2.0mmol/L Mg(superscript 2+), 0.3μmol/L primer, 0.3mmol/L dNTP, 240 ng/50μL DNA template, 1.75 U/50μL TaqDNA polymerase and the anneal temperature with 56℃.This optimized ITS-PCR system might ensure the purity and quality of ITS-PCR production. In this study, the length of the ITS fragment of Buxus sinica var.
实验结果表明,在总体积50μL的反应体系中,建立了最佳ITS-PCR扩增条件:Mg(上标 2+)浓度2.0mmol/L、引物浓度0.3μmol/L、dNTP浓度0.3mmol/L、DNA模板浓度240ng/50μL、TaqDNA聚合酶的用量1.75U/50μL和退火温度56℃,该优化体系保证了珍珠黄杨ITS-PCR产物的纯度和质量要求。
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This paper deals with how to use optimum method to make economical comparisons of the following heating systems: the hot water boiler, heat exchanger system, steam jet system and shower calorifier system, which are widely used in industrial boiler house.On condition that the nature of the untreated waters, rate of condensation recovery, fuel costs, heating days, and temperature drop of flow and return water are different, a lot of analysis and comparisons have been made in this paper and optimal designs for...
本文论述了对工业企业锅炉房内几种常用热水制备系统(热水锅炉、换热器系统、蒸汽喷射系统和喷淋加热系统)如何应用最优化方法进行经济比较的问题;并且对其在不同给水水质、燃料价格、采暖天数、凝结水回收率以及不同的送、回水温差等条件下,作了大量分析和比较,从而为计算者推荐出不同条件下的最优方案。
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A place wants catchpenny hero, be first world situation discretion of eye of changes in temperature, person is wiped smooth, to Hangzhou character, doing not have wrong Guo Mayun is breathed honor, the sculpture since vertical stroke comes " with Yan having glory " can need not.
一个地方要招徕英雄,是先把世情冷暖、人眼高低抹抹平,对杭州而言,没有错过马云就是无声的荣誉,竖起雕塑来&与有荣焉&就大可不必。
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The factors affect on the degree of substitution of product, yield and apparent viscosity, such as the mol rates of EPTAC with -NH2, reaction temperature, reaction time and the content of water in system have been discussed in detail. FTIR spectrometer and UV spectrometer are used to characterize the structure of the derivative and it is proved that substitution reaction mainly occurs on the -N element .The particle size and morphology of chitosan and quantemary ammonium salt of chitosan are analysised by comparing photos of their scanning electron microscope. The degree of substitution of HACC is determined by acid -base conductometric titration. An error in current formula of DS has pointed out and a correct formula has presented.On the base of experience of above experiment, the reaction conditions of HACC were systematically investigated through orthogonal design, and then the best conditions are found. Water-solubility and dependence of pH are studied.
壳聚糖和环氧丙基三甲基氯化铵在异相条件下发生反应,通过单因素实验,制备了一系列不同性能的壳聚糖季铵盐,本文首次详细讨论了反应条件(反应摩尔比、反应时间、反应温度、水含量)对产率及产物性能的影响;用红外光谱和核磁共振对结构进行表征分析时,发现季铵盐阳离子基以N位上取代为主;通过电镜图片对壳聚糖和季铵盐衍生物外观形貌进行对比,采用酸碱电导滴定法测定产物的取代度,并对常用取代度公式做了修正。
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It can be mixed with various greases. Under the action of high temperature short time and high pressure produced by the friction, nanometer ceramic power will have cementation and densify the worn metal su*****ce layer, and form a layer of cermet, thus, restore the worn parts to optimum fit clearance and lubrication status.
不含毒素、重金属和强化物,可与各类油脂混合,在摩擦产生的瞬间高温、高压力的作用下,纳米陶瓷粉体在磨损金属表层渗镀和致密,生成一层金属陶瓷,从而使磨损部件恢复到最佳的配合间隙和润滑状态。
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Firstly, it is difficult to densify CeO2 based solid electrolyte materials and a sintering temperature above 1600℃is required to prepare dense CeO2 based solid electrolyte materials by the conventional solid-state reaction method;Secondly, doped ceria are brittle materials and have weak mechanical strength, which would be susceptible to fracture due to thermal stresses and mechanical stresses during cell fabrication and operation; Thirdly, electronic conduction will be introduced because of the reduction of Ce4+ under low oxygen partial pressure, which would reduce the output voltage and output power of the cells.
其一,CeO_2基电解质材料难以致密化,用常规的固态反应法制备的CeO_2基电解质粉体需要在1600℃以上烧结才能达到致密化;其二,CeO_2基电解质为脆性材料,机械强度低,使其容易在电池的制造及运行过程中由于热应力及机械应力而破裂;其三,CeO_2基电解质在燃料极一侧由于Ce4+还原为Ce3+出现电子导电,降低电池的输出电压和输出功率,影响电池的性能。
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Firstly, it is difficult to densify CeO2 based solid electrolyte materials and a sintering temperature above 1600℃is required to prepare dense CeO2 based solid electrolyte materials by the conventional solid-state reaction method;Secondly, doped ceria are brittle materials and have weak mechanica...
其一,CeO_2基电解质材料难以致密化,用常规的固态反应法制备的CeO_2基电解质粉体需要在1600℃以上烧结才能达到致密化;其二,CeO_2基电解质为脆性材料,机械强度低,使其容易在电池的制造及运行过程中由于热应力及机械应力而破裂;其三,CeO_2基电解质在燃料极一侧由于Ce4+还原为Ce3+出现电子导电,降低电池的输出电压和输出功率,影响电池的性能。
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So, to avoid excessive extrapolations of the Antoine equation for the two more volatile components (dipropyl ether and1-propyl alcohol), we have decided to use in this work other equations to estimate these vapour pressures which are applicable in a larger temperature range.
因此,为了避免安托万方程对这两种挥发性更强的成分(二丙醚和1-丙醇)的过度计算,我们决定在本工作中用其他的适用于更大温度区间的方程来估计它们的蒸汽压。
- 推荐网络例句
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I didn't watch TV last night, because it .
昨晚我没有看电视,因为电视机坏了。
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Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.
今年以来,在北京的很多小区里,电梯液晶电视被撤了下来。
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I'm running my simile to an extreme.
我比喻得过头了。