查询词典 chemical

Products are mainly marine flange, steel flange with petro-chemical, product specification areas: Metric DN15 ~ DN2000, Inch Series 1 / 2 "~ 78", according to GB, HG, SH, SY, DL, and ASME, ANSI , JIS, DIN and other standard production, are widely used in petroleum, chemical, natural gas, electricity, nuclear power, metallurgy, shipbuilding, food, pharmaceutical, urban water supply and environmental protection management of the road industry, and its materials, specifications, size, performance in full compliance with relevant standards.

法兰产品主要有船用、石油化工用钢制法兰，产品规格范围为：公制DN15~DN2000，英制系列1/2"～78"，可按GB、HG、SH、SY、DL和ASME、ANSI、JIS、DIN等标准生产，广泛应用于石油、化工、天然气、电力、核电、冶金、造船、食品、制药、城市供水和环保等行业的管路上，其材质、规格、尺寸、性能完全符合相关标准。

Natural Insecticidal Pyrethrum CHENG Xuan-Sheng1, ZHAO Ping2, YU Yong3 (1Jiangsu Pesticide Research Institute, Nanjing 210036, China; 2Shenyang Research Institute of Chemical Industry, Shenyang 110021, China; 3Shengyang BMD Chemical Company, Shenyang 110021, China) Abstract: This paper reviews research pertaining to natural insecticidal pyrethrum, including the active ingredient in the pyrethrum flower, manufacture, formulation, toxicity, and research on control of agriculturally important insect pests.

天然除虫菊程暄生1，赵平2，于涌3 (1江苏省农药研究所，南京210036；2沈阳化工研究院，沈阳 110021；3沈阳博美达化学有限公司，沈阳110021)摘要综述了天然除虫菊的相关研究，包括除虫菊花的杀虫活性成分、制剂与加工、毒性及在农业害虫防治方面的研究。

Solubilities and physico-chemical properties in the solution of these systems were determined. According to the experimental data, equilibria phase diagrams and physico-chemical property -composition diagrams of ternary systems were plotted; Equilibrium phase diagrams and corresponding water content diagrams of quaternary systems were finished; Stable and metastable phase diagrams, corresponding water content diagrams of the quinary systems at 288K (saturated with Li2CO3) were also plotted.

测定了上述各体系288K平衡液相中各组份的溶解度及主要物化性质；绘制了三元子体系的相图，物化性质—组成图；绘制了四元子体系的干盐图及相应的水图；完成了该五元体系稳定及介稳平衡体系为Li_2CO_3饱和的投影相图，水含量图。

In order to investigate the relationship of solubility between vanadium and the other co-existing ion in soil. The phase equilibria of the quinary systemNaVO_3 + KVO_3 + NaH_2PO_4 + KH_2PO_4 +(NH_2)_2CO + H_2O and its five quaternary sub-systems were studied at 298K with isothermal dissoluble method. According to the reference, all these systems are not reported yet. The solubilities and the physico-chemical properties such as density, conductivity, pH value and refractive index of the equilibrium solutions were determined. Based on the determined values, the solubility stereo-diagram and projected-diagram( saturated with KVO3), projected-diagramsaturated with (NH_2_2CO, and water content diagram of the quinary system, isothermal solubility diagrams of the quaternary sub-systems, and the physico-chemical properties-composition diagrams of the equilibrium solutions were plotted.

为探明土壤中钒的溶解性同土壤中主要共存离子间的关系，本论文采用等温溶解平衡法研究了文献中还未见报道的五元体系NaVO_3+KVO_3+NaH_2PO_4+KH_2PO_4+(NH_2)_2CO+H_2O及其五个四元子体系298K相平衡关系，测定了这些体系298K时各组分的溶解度及平衡液相的密度、电导率、pH值和折光率等物化性质，并绘制了五元体系溶解度空间立体图，以KVO_3为饱和的投影图，以(NH_2)_2CO为饱和的投影图、水图及四元子体系的溶解度等温图、水图和平衡液相物化性质一组成图。

Compared to other coal chemical enterprises, Shanghai Coking Coal Chemical Industry to highlight the advantages of production in coal generation technology Quito route.

相比其他煤化工企业，上海焦化进行煤化工生产的突出优势体现在煤基多联产的工艺路线上。

Electrical and chemical stimulation of raphe subnucleiThe first part of this study was devoted to determining the effects of electrical or chemical stimulation of the medullary raphe nuclei on respiratory movements.

电刺激或化学刺激延髓中缝核群对呼吸运动的影响本课题第一部分系统观察了电刺激及化学刺激延髓中缝核群导致的呼吸运动效应。

Preliminary studies on the chemical properties of razor clam during storage at different temperatures and with the addition of complex biological preservatives were conducted using sensory, chemical, microbiological methods. The optimum hydrolytic conditions of razor clam with the addition of proteases were determined so as to provide some theoretical references for the preservation and advanced processing of razor clam.

本论文运用感官、化学和微生物学的方法，对缢蛏在不同贮藏温度和添加复合生物保鲜剂条件下的贮藏特性进行了初步研究，同时还以水解率为主要指标，探讨了蛏肉蛋白质酶解的工艺条件，以期为缢蛏的贮藏保鲜与深加工提供理论依据。

Principles of chemical reactivity: Energy and chemical reactions.

化学活性的原则：能量与化学反应。

The research analysed the current status and pollution treatment research review from municipal refuse output, waste physical component, hazards, heavy metal pollution. On the basis of overall understand of current treatment situation about main municipal refuse landfill site of Fujian province. By the simulated test, utilizing 7 kinds of physical adsorbents (zeolite, incineration ashes, slag, plant ash, charcoal, ochre, active carbon), 4 kinds of chemical flocculant FeSO_4, AlCl_3, FeCl_3, Al_2(SO_4_3, and 3 kinds of hyclrophytes, we carried through the pollution removing study of heavy metal in landfill leachate and discussed removing effect of different physical adsorbents, chemical flocculant and hyclrophytes.

并在对福建省主要城市生活垃圾的处理现状全面了解基础上，通过室内模拟试验，分别利用7种物理吸附剂(沸石、焚烧灰、炉灰、草木灰、木炭、赭石、活性炭)、4种化学絮凝剂FeSO_4、AlCl_3、FeCl_3、 Al_2(SO_4_3和3种水生植物进行垃圾渗滤液中重金属的污染去除研究，比较不同物理吸附剂、化学絮凝剂和水生植物对垃圾渗滤液重金属污染的去除效果，试图从中筛选出治理成本低和治理效果好的城市垃圾渗滤液重金属污染修复技术，供南方城市垃圾处理场推广应用。

It is found through chemical analysis on the physico-chemical modality of municipalwastewater in Wuhan that the content of resoluble organic pollutant in wastewater is nothigh with about 30 percent while the nonresoluble one of about 70% can be entirelyremoved by CEPT.

通过对武汉市城市污水的物化形态进行化学分析发现，该污水中的溶解性有机污染物的含量不高，只有30％左右：70％左右的非溶解性物质可通过CEPT技术加以去除。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。