room temperature的例句大全

Boron trifluoride could induce the rapid polymerization of phenylacetylene whether at room temperature or lower.

三氟化硼不论在室温或较低温度可以引起苯乙炔的急骤聚合，所得聚苯乙炔的平均分子量在2000以上。

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The conservation of 12 genera. 216 strains of molds at room temperature for 16 yrs was carried out by moldy bran method.

用麸曲法室温保藏木霉、曲霉和青霉等12属共216株，存活率因种而异。

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The endurance limit is reduced for temperatures above room temperature.

温度高于室温,持久极限则降低.

词典精选例句

People began to dream of materials that had zero resistance even at room temperature.

于是人们开始梦想着发现甚至在室温下也能够具有零电阻的材料.

时文部分

All other common gases are cooled by expansion at room temperature and below it.

所有其它普通气体在室温和室温以下时都会因膨胀而冷却.

词典精选例句

Under mild conditions, at room temperature and ambient atmosphere, diphenyl thiourea could be synthesized through the reaction of aniline and CS 2 over AlCl 3 catalyst with high yield and high selectivity.

常温常压下，用AlCl3作催化剂催化苯胺和CS2进行反应，可以高收率和高选择性地得到二苯硫脲。

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Electron beam-irradiation method was applied to prepare nano-sized nickel powders in aqueous system at room temperature and ambient pressure using polyvinyl alcohol ( PVA) and dodecyl trimethyl amine bromide ( DTAB) as the surfactants respectively.

在水溶液中，于常温常压下分别使用聚乙烯醇（PVA）和十二烷基三甲基溴化胺（DTAB）为表面活性剂，用电子束辐照方法制备了纳米镍粉；

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The reason of the room-temperature resistivity decreasing distinctly is part of doping Cl element substituting O-site as donor dopant.

室温电阻率大幅降低的原因，是引入的Cl元素有一部分能进入晶格取代O位起施主作用。

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Design of Temperature Automatic Control System for Zanthoxylum Drying Room Based on ARM

基于ARM的花椒烘房温度自动控制系统设计

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Research on Automatic Control System of Zanthoxylum Drying Room Temperature Based on Fuzzy-PID

基于模糊PID的花椒烘房温度自动控制系统的研究

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But it is brittle at room temperature because of its big grains and carbide network in the grain boundary coming from its slow cool-speed.

但是由于冷速较低，结果晶粒粗大，晶界形成了粗大的碳化物网络，使得它在室温下为脆性，其延伸率几乎为零，机加工性能极差。

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The calculating results below the room temperature can be integrating to the thermodynamic database.

室温以下的计算结果可以用来补充了热力学数据库信息。

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Treatment of 3-aminopyridine with AFA at room temperature gave 3-formamidopyridine in 95 % yield.

在室温下 3- 氨基吡啶与甲乙混酸酐反应制得3-酰胺基吡啶,产率为95%.

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Mixing the main agent with hardener and stirring thoroughly and using only in room temperature.

当油墨温度恢复至室温后才能开罐使用,与规定量的硬化剂混合,充分搅拌均匀并静置后再作用.

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Microstructure and mechanical properties of copper clad aluminum wire by drawing at room temperature

铜包铝线材室温拉变形后的显微组织和力学性能

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The microstructure of copper clad aluminum wire by drawing at room temperature is vimineous grain as fibril shape from prime equiaxed grain.

经室温拉拔的铜包铝线的显微组织是纤维状细长晶粒，晶界面积增大系数与形变量近似地成正比。

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Compared to the normal wire drawing technology in room temperature, the cryogenic wire drawing technology showed remarkable effect: tensile strength was improved nearly 400 MPa, micro vickers hardness was enhanced 74 HV 4.9N, in the meanwhile, toughness was almost changeless.

研究表明，在相同的拉丝条件下，与常温工艺相比，深冷工艺能大幅度提高钢丝的综合力学性能。抗拉强度进一步提高近400MPa，显微硬度进一步提高74HV4.9N，而抗扭次数及伸长率基本不变。

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The ECI is feasible to prepare rapidly fiber-reinforced metal matrix composites at room temperature.

证实了ECI在室温下快速制备纤维增强金属基复合材料的可行性.

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The EPR spectrum at low temperature was also taken to compare with that at room temperatrue.

同时测定了低温EPR谱图以便比较.

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The anoxia endurance test was made in a high temperature room with Tdb 39 ℃ and Twb 34 ℃, and the survival time of mice in the sealed bottle was recorded.

耐缺氧试验在高温室（干球39℃、湿球34℃）内进行，记录小鼠在腊封瓶内的存活时间。

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