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- gaseous phase diffusion 气相扩散
- Fumigants are pesticides acting in gaseous phase. 熏蒸剂是以气体形式作用的农药。
- Latest advances in the gaseous phase catalytic synthesis of difluoromethane and the preparation of catalysts are summarized. 综述了二氟甲烷的气相催化合成工艺及其催化剂制备的最新进展;
- The effects of prepolymerization and the differences in apparent kinetics between gaseous phase polymerization and slurry polymerization are also briefly described. 同时对预聚合的作用及气相聚合与淤浆聚合表观动力学行为的不同性也作了简要介绍。
- The Burnett pvT measurement system was improved. Eighty pressure-volume-temperature data points for HFC-227ea in the gaseous phase were measured using Burnett-isochoric methods. 改进了实验室原有的pvT实验台,测量了HFC-227ea气相pvT性质。
- Otherwise,the oxidation rate of felt base carbon/carbon composites is influenced by the carbon/carbon composite surface reaction rate,the gas phase diffusion aud the catalysts. 另一方面，毡基碳/碳复合材料的氧化速度主要受该材料的表面反应、气体扩散、催化剂等因素的影响。
- In this text,seven kinds of organic phosphorus in the vegetables were tested with DB-1 capillary post and the chromatograph of gaseous phase with PFPD detection. 用DB1毛细管柱,带PFPD检测器的气相色谱仪定量检测蔬菜中7种有机磷农药残留。
- The method of transient liquid phase diffusion bonding(TLP-DB) was widely applied in the advanced materials bonding fields because of its unique characteristic advantage. 瞬间液相扩散连接(TLP-DB)方法以其独有的性能优势,在先进材料连接领域得到广泛的重视和应用。
- Ferrite slag is more efficient in removing As and Sb than fayalite slag.The distributions of Sn, Pb, Zn, As, Sb and Bi in gaseous phase increase with increa... 研究表明：无论是硅酸铁炉渣体系，还是铁酸钙炉渣体系，挥发性的伴生元素锡、铅、锌、钾、锑和铋等在气相中的分配率均随熔炼温度的升高而明显增大。
- The method of transient liquid phase diffusion bonding (TLP-DB) was widely applied in the advanced materials bonding fields because of its unique characteristic advantage. 摘要瞬间液相扩散连接(TLP-DB)方法以其独有的性能优势，在先进材料连接领域得到广泛的重视和应用。
- The synthesis of dimethyl oxalate (DMO) and diethyl oxalate (DEO) by CO coupling reaction in gaseous phase over the supported palladium catalysts was investigated. 在固定床反应器中对钯系催化剂上CO气相催化偶联制草酸二乙酯和草酸二甲酯的空时收率、选择性和CO的转化率进行了实验研究。
- This paper presents a review concerning the Ziegler-Natta catalysts for gaseous phase polymerization of ethylene and typical methods of preparing the catalysts. 本文综述了乙烯气相聚合催化剂研究状况,列举了一些制备气相聚合催化剂有代表性的方法。
- A kinetic method for the direct determination of CO_2 in gaseous phase is proposed, based on fading the phenolphthalein when CO_2 dissolves in dilute aqueous solution of NaOH. 本文基于气相中的二氧化碳在稀氢氧化钠-酚酞溶液中的溶解而使酚酞逐渐褪色的动力学行为提出了一种直接测定气相中微量二氧化碳的动力学分析法。
- A study of the proton transfer process from halobenzoic acids to benzoic acid in water-ethanol mixtures compared with the same process in the gaseous phase is presented. 将在水乙醇混合溶剂中从卤代苯甲酸到苯甲酸的质子迁移过程与在气相中的同一过程进行了比较。
- Determine with the gaseous phase chromatograph of the electron catching device of little pool after the silicon alkanisation,mark legal quantity outside. 硅烷化后用微池电子捕获器的气相色谱仪进行测定,外标法定量。
- The kinetic characteristics of catalytic coupling of carbon monoxide to diethyl ox-alate m gaseous phase on Palladium catalyst were studied on the basis of industrial application. 以工业应用为背景,研究了CO在钯系双金属催化剂上气相催化偶联合成草酸二乙酯的动力学特性。
- Two types of radial GRIN rods 7mm and 10mm in diameter respectively, have been prepared by liquid phase diffusion copolymeri- zation of two binary monomer systems: DAIP-MMA and DAP-MMA. They both possess fine light-focusing properties. 本文用液相扩散共聚法制备DAIP-MMA和DAP-MMA两种二元共聚物径向梯度棒,制得了直径为7mm的DAIP-MMA径向梯度棒和直径为11mm的DAP-MMA径向梯度棒。
- Liquid phase precipitation method,sol-gel method,alkoxide hydrolysis method,gaseous phase method,solid phase method were discussed and analyzed in detail. 液相沉淀法由于原料廉价易得、工艺简单、产品性能稳定、环境污染少等特点使其成为最具有工业应用价值的纳米氧化镁制备技术。
- The small-scale devices are suitable for the hydrogen source of open-air analysis, hydrogen atom clocks, fuel cells and testing instruments such as gaseous phase chromatographs. 小型金属氢化物储存净化器适于野外分析、标准频标氢原子钟和气相色谱仪等测试仪器及燃料电池的氢气源。
- The air of the three warmers is combined by organizing interval, cell interval and molecule interval and other gaseous phases to communicate. 三焦之气并藉由组织间隙、细胞间隙和分子间隙与其他气相沟通。
