查询词典 laboratory experiment

We got the effective bacteriocide dilute rate for Valsa mali Miyabe et Yamada,apple rota disease and cucumber mildew by laboratory biological assessment and large scale fields experiment.

通过室内生物测定及两处大规模田间药效实验得出苦·小檗碱杀菌水剂对苹果腐烂病、苹果轮纹病和黄瓜霜霉病的有效抑菌稀释度。

The electrical conduction and electrothermal effect of carbon fiber reinforced conductive concrete were studied at first, and then the deicing experiment in laboratory and snow melting in field were carried out.

首先研究了碳纤维混凝土的导电性和电热特性，然后在此基础上，进行了碳纤维导电混凝土板实验室除冰和野外化雪的研究。

In order to gain a better understanding of coupled thermo-hydro-mechanical processes in indurated clays being considered in various countries as host rock for the disposal of high-level radioactive waste,a heating experiment named HE-D is being conducted on the Opalinus clay at the Mont Terri Rock Laboratory in Switzerland.

为深入理解硬泥岩在热–水–力耦合作用下的变化特征，在瑞士的 Mont Terri 地下岩石实验室对 Opalinus 硬泥岩进行了现场加热试验。

The shell resource utilization by these species in natural environment was studied and compared with result for laboratory shell selection experiment of the intertidal C. latens.

本论文之目的在研究此两种寄居蟹对贝壳资源的利用，另外利用潮间带的C。

Using this model three competence-deficient pneumococci, which was identified by PCR and transformation experiment, were constructed. It is found different strain has different bacterial optimal density for being induced into competence. The optimal density for strains 1, 2 and 22 was 0.1, 0.08and 0.07 respectively. The optimal condition for transformation is c plus y culture at pH8.0. In c plus y culture at pH6.8, which restrained pneumococci forming transformation naturally, pneumococci could be induced to form transformation by CSP.It is concluded that we could induce different S.pneumoniae by CSP into competence in their optimal density in laboratory. 2. It was discussed the relationship between pneumococcal transformation formation and its opportunistic pathogenesis. Comparing their virulence with that of parental strains by challenging mice intraperitoneally and adhering to ECV-304 cell respectively.

结果表明不同肺炎链球菌株的转化最适菌密度不同，1、2和22号菌株的最适转化密度分别为0.1、0.08和0.07；用于转化的CTM培养基最适为pH 8.0的C+Y培养基；在自然转化下不能诱导转化发生的pH 6.8的C+Y培养基中，使用CSP诱导，也能促使细菌发生转化，只是转化效率较低；结论：实验室条件下，不同细菌在一定菌密度时可利用CSP诱导肺炎链球菌成为感受态发生转化。2、为探讨肺炎链球菌转化对毒力表达的影响，本研究分别通过体外粘附人脐静脉血管内皮细胞ECV-304和体内小鼠毒力实验观察1、2和22号肺炎链球菌和其转化缺陷菌株1t、2t和22t毒力的差异。

The first part of this thesis recapitulates the development and application of virtual experiment and virtual laboratory, computer aided construction and distance education at home and abroad.

本课题首先阐述了国内外虚拟实验及虚拟实验室的发展，计算机辅助教学的发展及远程教学的发展和应用情况。

In this paper, RMA2 model and RMA4 model, which were developed by Coastal and Hydraulics Laboratory, Waterways Experiment Station, US Army Engineer Research and Development Center and officially recognized as standardized models in America, are introduced into the research of Wulihu lake water environment. This application study is helpful to the standardization of lake hydrodynamics and water quality numerical simulation in China.

本论文引入了在美国得到官方认可的、由美国陆军工程兵团河道试验站开发的平面二维有限元水动力学模型RMA2与水质模型RMA4，并重点开展了RMA2和RMA4在五里湖中的应用研究，为标准化浅水湖泊水动力与水质数值模型作了偿试性的工作。

Minitype rolling mill exploitation has gone to the lavatory for the experiment and scientific research have provided quite a few , the improvement the main body of a book has been carried out on present use rolling mill of precise copper of our university laboratory, has adopt gear wheel deflection falling-in way to have realized rolling mill controlling to rolling thickness , the rolling mill improving the day afer tomorrow has adopt three set of gear wheels to be engaged , two set of gear wheels axes among them may slide respectively along the erect sliding rail and the arc sliding rail , come true thereby to controlling rolling thickness.

小型轧机的开发为实验和科研提供了不少方便，本文对我校精密铜实验室现用轧机进行了改进，采用了齿轮变位啮合办法实现了轧机对轧制厚度的控制，改进后的轧机采用三组齿轮啮合，其中两组齿轮的轴线可分别沿竖直滑轨和弧形滑轨滑动，从而实现对轧制厚度的控制。

A pilot experiment was done based on laboratory research; the economy and feasibility about absorbents had been studied.

在实验室实验的基础上又对吸收剂进行了小型扩大实验，并对吸收剂的经济性和可行性进行了评价。

The effect and selectivity of ten kind of herbicide were studied in laboratory bioassay and field experiment.

试验通过使它隆、快灭灵和双酯灵等10种除草剂对该物种的毒力和选择性测定分析，研究了土大黄不同生育期对除草剂的敏感性和应用后不同时期的中毒情况。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。