查询词典 chemical analysis

It is impossible to establish one method to applying for all of pesticides and samples, so different methods are introduced to analysis different categories of pesticides, according to different physico-chemical properties.11 Organochlorine Pesticides are detected by GC-ECD and extracted with 50ml acetone and 100ml petroleum aether in Solxhlet's extractor clean-up with oil of vitriol.

农药种类繁多，结构各异，建立一种方法适用于所有农药和样品难度极大，本文将常用农药按分子结构分为四类分别建立检测方法：采用索氏提取器，丙酮/石油醚(50：100，V：V)混合溶剂提取、磺化法净化、GC-ECD检测研究了11种有机氯农药在蔬菜、水果、粮食中残留，结果显示11中有机氯农药在五种样品上的5次重复平均回收率，从添加0.005到2.000mg/kg的回收率范围为92.4%—103.7%，平均回收率大于80%，变异系数范围在1.16—9.16%之间。

Namely how at the time of keeping this race special features art, foreign cultural chemical element of again appropriate absorption, this text to take the painter who contemporary and severals rather have the representative in the innovation of the water person painting and expand as an example did some analysis.

即如何在保持本民族特色艺术的同时，又适当的吸收外来文化元素，本文以当代几位颇具有代表性的画家在水墨人物画方面的创新和拓展为例做了一些分析。

A detailed analysis of the experimental results implied that the attractive forces play a main role in the collisional quenching processes of NCO by the quenchers studied in this work, and for some quenchers, the quenching of NCO is probably controlled by the entrance-channel and might be ascribed to the contribution of chemical reactions.

对实验结果的分析表明，电子激发态NCO A〓Σ〓（00〓0）的猝灭过程可能属于多极吸引势起着重要作用的入口通道控制机制，对于大多数被研究的猝灭剂分子，化学反应在其对NCO自由基的猝灭过程中可能起着重要的作用。

A detailed analysis of the experimental results implied that the attractive forces play a main role in the collisional quenching processes of NCO by the quenchers studied in this work, and for some quenchers, the quenching of NCO is probably controlled by the entrance-channel and might be ascribed to the contribution of chemical reactions.

这一加成过程是一个入口势能面属于纯吸引型的无垒过程，故是NCO+O反应的主要通道。二是O原子攻击NCO分子的O原子得到中间物tran-NCOO，再通过C-O键的断裂生成产物CN+OO。该产物通道由于是吸热的，故很难发生。

It's also applied in base plate of electric circuit, analysis reagent and hig-pressure-Na-lamp materials. It can be made to analyst carrier used in petroleum chemical industries.

Al〓O〓超微粉还可用于：制造集成电路基板，用作分析试剂及高压钠灯电弧等高级陶瓷原料；将纳米化α-Al〓O〓制成条状用作催化剂和催化载体，是石油炼制和石油化工中的主要催化剂和载体。

Die Bonders, Wire Bonders, Packaging Tools, Assembly Robotics, Assembly Test, Wafer Probers, Device Handlers, Other Automatic Test Equipment, Reliability Test, Failure Analysis Test Instruments, Clean Room, Gas Handling Equipment, Chemical Handling Equipment, Facilities Equipment, Vacuum Pumps, tape and reel, etc.

模具粘合机，焊线机，包装工具，装配机器人，装配测试，晶圆probers ，装置的处理，其它产品自动测试设备，可靠性试验，失效分析测试仪器，无尘室，气体处理设备，化学处理设备，设施，设备，真空泵，磁带和卷轴等。

The content of assemble alkaloids of huperzine in 10 different geographical populations of Huperzia serrata and Phlegmariurus cryptomerianus from Zhejiang and Fujian Province was determined,and their phenetic differentiation in chemical composition was studied using the method of dedentred correspondence analysis based on their UV spectra.

对来自浙江、福建境内石杉科植物蛇足石杉、柳叶马尾杉10个不同地理居群的石杉总碱含量进行了测定，并基于紫外光谱，对它们的表型分化进行了除趋势对应分析。

Determination of Tyrosine in Urine Spectrophotometric Method;2. For chemical pre-extraction, MSTFA/TMSL derivatization reaction, GC/MS analysis, it is confirmed that two main metabolites (19-no-randrosterone and 19-noretiocholanolone) were found in nandrolone urine.

本文对合成的19-去甲雄烷醇酮的四个差向异构体混合物进行气相色谱分离，对诺龙和炔诺酮用药后，留取的人尿样通过化学预处理，MSTFA/TMSI衍生化反应，GC/MS分析，确证了尿样中诺龙的两个主要代谢产物为19-去甲雄酮和19-去甲原胆烷醇酮，炔诺酮的两个主要代谢物是四氢炔诺酮的两个形式，可能是3α-OH-5α-THINE和3α-OH-5β-THINE，在炔诺酮代谢前期，还发现有诺龙的上述两个代谢物存在。

Objective to study the difference of nutrient of domestic and foreign peats, through the analysis of the chemical characteristics of domestic and foreign peats.

通过对国内使用较广泛的进口泥炭和国产泥炭的养分研究，明确国产泥炭与进口泥炭之间的养分差异。

By various means of analysis and test,several layers of sticking kiln crust in zinc leached residue volatility kiln were made clear for their chemical compositions,phase components,and physicochemical properties,such as smelting point,viscosity,etc.

采用多种分析检测手段对锌浸出渣挥发窑内挂结的几层窑皮进行测试和化验，确定了其化学成分、物相组成、熔点和黏度等物理化学性质；深入分析了各层窑皮的挂结机理。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。