二金属的

A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors; one or more aluminum containing cocatalysts; a selectivity control agent comprising at least one silicon containing compound containing at least one C1-10 alkoxy group bonded to a silicon atom, and one or more activity limiting agent compounds comprising one or more aliphatic or cycloaliphatic carboxylic acids; alkyl-, cycloalkyl- or alkyl-ester derivatives thereof; or inertly substituted derivatives of the foregoing.

一种用于丙烯聚合的催化剂组合物，所述催化剂组合物包括：一种或多种齐格勒-纳塔主催化剂组合物，该主催化剂组合物包括一种或多种过渡金属化合物和一种或多种芳族二羧酸酯内部电子给体；一种或多种包含铝的助催化剂；选择性控制剂，该选择性控制剂包括至少一种包含硅的化合物，该化合物包括至少一种与硅原子连接的C 1-10 烷氧基；和一种或多种活性限制剂化合物，该活性限制剂包括一种或多种脂族或脂环族的单或聚羧酸类、其烷基-、环烷基-或烷基-衍生物、或上述惰性取代的衍生物。

Zhejiang Jinyun image quality of factory was founded in 1983, is a twenty-odd years Branch, Works, Trade and one of the non-destructive testing equipment specialized factory. 85 years linear image quality developed through the provincial technical appraisal of dollars, and won the Zhejiang Science and Technology Progress Award. 87 years by the National Ministry of Finance, the Ministry of Labor, Planning Commission, Board of Education awards a national advanced units of work-study program. 88 years pass as the quality of, through technical appraisal in Zhejiang Province, andscientific and technological progress award. 97 years before the image quality, the type, screen, cassette, magnetic, film and other products being sold planes Korea, Taiwan, EU, India, Pakistan, Japan, Iran, Thailand, Malaysia, Hong Kong, and other countries and regions. 2000, developed country standard sample linear image quality through the State Bureau of Technical Supervision of Identification, the level of Western industrial countries to achieve the same level, to fill a non-destructive testing industry, country kind of scale-free blank. In 2001 through ISO9002 quality management system certification. Beginning in 2001 specifically for the gas pipeline design Detected special screen, camera bag and other equipment in the West-East Gas Detected been widely applied. Materials and Shanghai in 2003 by co-developed country industry standard radiography JB/T5075-2004 Detect metal screen. Materials and Shanghai in 2004 by co-developed a national standard GB/T19803-2005/ISO1027: 1983 image quality of radiographic principles and logo. Materials and Shanghai in 2005 by co-developed country industry standard of image quality JB/T7902-2005 linear.

浙江省缙云像质计厂创立于1983年，是一家集二十余年科，工，贸一体的无损检测器材专业厂家。85年研制的线型像质计通过省级技术鉴定，并荣获浙江省科技进步奖。87年获国家财政部、劳动部、计委、教委颁奖的全国勤工俭学先进单位。88年孔型像质计通过浙江省技术鉴定，并获省科技进步奖。97年始像质计，铅字，增感屏，暗盒，磁钢，洗片架等产品陆续销往韩国，台湾，欧盟、、印度、巴基斯坦、日本、伊朗、泰国、马来西亚、香港、等国家地区。2000年研制的国家标准样品线型像质计通过国家技术监督局鉴定，其水平达到西方工业发达国家同等水平，填补了国家无损检测业无标样的空白。2001年通过ISO9002质量管理体系认证。2001年始专为输气输油管道检测设计的特种增感屏，暗袋等检测器材在西气东输中被广泛应用。2003年与上海材料所共同制定了国家行业标准JB/T5075-2004射线照相检测用金属增感屏。2004年与上海材料所共同制定了国家标准GB/T19803-2005/ISO1027：1983射线照相像质计原则与标识。2005年与上海材料所共同制定了国家行业标准JB/T7902-2005线型像质计。

During the investigation of the reactivity of O_SCl_2(PPh_3)_2CH=C(PPh_3CHCH=CH_2 and O_SCl_2(PPh_3)_2CH=C(PPh_3C(=CH_2)CH=CH2, several stable osmacycles with novel structure, such as osmabenzenes, osmafurans, osmacycles containing intramolecular-coordinated allene, intramolecular-coordination osmacycles containing osmacarbene, an osmacyclopentadiene, were isolated during the investigation of the reactivity of O_SCl_2(PPh_3)_2CH=C(PPh_3CHCH=CH_2 and O_SCl_2(PPh_3)_2-CH=C(PPh_3C(=CH_2)CH=CH_2.In addition, some convenient and efficient methods to prepare these osmacycles were developed.

首先，合成出两种具有反应活性的金属杂五元环IC配合物OsCl_2(PPh_3)_2CH=C(PPh_3CHCH=CH_2和OsCl_2(PPh_3)_2CH=C(PPh_3C(=CH_2)-CH=CH_2，并对它们进行了系统表征；进而，研究了这些活性五元配合物的反应性，合成出多种稳定的锇杂环配合物，其中包括锇苯、锇呋喃、含配位联烯的锇杂IC环化合化物、含锇卡宾的IC环化物、首例锇杂环戊二烯化合物等多元化的产物。

The catalytic action of various kinds of functional coordination compound and metallomicelles which are made from the complex and micelle, as mimic hydrolase or peroxidase, have been studied respectively in catalyzing the carboxylic ester and phosphatic diester hydrolysis, and the phenolic derivant oxidation in this paper. Some novel results of academic significance have been obtained.

本文以不同类型的功能配合物及其与表面活性剂形成的金属胶束作为水解酶和过氧化物酶的模拟酶模型，分别研究它们对羧酸酯、磷酸二酯水解反应和酚类氧化反应的催化作用，取得了新的有学术意义的成果。

A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors; one or more aluminum containing cocatalysts; and a mixture of two or more different selectivity control agents, said SCA mixture comprising from 1 to 99 percent of one or more esters of one or more aromatic monocarboxylic acids or substituted derivatives thereof, and from 99 to 1 percent of one or more alkoxysilane compounds.

一种用于丙烯聚合的催化剂组合物，包括：一种或多种齐格勒-纳塔主催化剂组合物，该齐格勒-纳塔主催化剂组合物包括一种或多种过渡金属化合物和一种或多种芳族二羧酸酯内部电子给体；一种或多种包含铝的辅催化剂；和两种或更多种不同的选择性控制剂的混合物，所述SCA混合物包括1到99％的一种或多种芳族单羧酸的一种或多种酯或其取代衍生物、和99到1％的一种或多种烷氧基硅烷化合物。

Energy deposition at the interface of the particles caused by micro-explosive welding in explosive consolidation of metal powders is analyzed by symmetrical impaction model of uncompressible liquid. Two-dimensional equation of energy in the flow field of explosive welding is deduced and solved by finite difference method. Then the distribution of the temperature in the flow field is calculated on the basis of considering the adiabatic compression.

摘 要：以不可压缩理想流体对称碰撞模型对金属粉末爆炸烧结中由微爆炸焊接引起的颗粒界面附近沉积的能量进行了分析，在考虑热传导效应的基础上推导出了焊接流场中二维形式的能量方程并用有限差分法对其进行了求解，在考虑冲击绝热压缩贡献的基础上计算出了焊接流场中的温度分布。

The DNG structure unit is composed of square split ring resonator and strip wire. The modified NRW method is used to extract the equivalent permittivity, permeability, and refractive index from the scattering parameters of the two-port waveguide with DNG structure. At the designed operating frequency, the refractive index approximates zero, which makes the nondirective electromagnetic wave tend to approximate plane wave along the normal direction of the superstrate and congregate the radiation energy.

以方形的SRR环和金属条带构成双负媒质结构单元，使用修正的NRW方法，通过放置双负媒质结构的二端口波导的散射参数，提取了等效的介电常数、磁导率和折射率，在所设计的工作频率，折射率接近于0，可以将原本发散的电磁波整理成趋近于覆层面法线方向的近似平面波，起到能量汇聚的功能。

The DNG structure unit is composed of square split ring resonator and strip wire. The modified NRW method is used to extract the equivalent permittivity, permeability, and refractive index from the scattering parameters of the two-port waveguide with DNG structure. At the designed operating frequency, the refractive index approximates zero, which makes the nondirective electromagnetic wave tend to approximate plane wave along the normal direction of the superstrate and congregate the radiation energy.

以方形的SRR环和金属条带构成双负媒质结构单元，使用修正的NRW方法，通过放置双负媒质结构的二端口波导的散射参数，提取了等效的介电常数、磁导率和折射率，在所设计的工作加热板频率，折射率接近于0，可以将原本发散的电磁波整理成趋近于覆层面法线方向的近似平面波，起到能量汇聚的功能。

A catalogue should be kept by all mineral collectors, and I believe the best and simplest method is a notebook starting with number one, and as specimens are added to the collection, number two, three, four, etc. From this list any number of categories can be worked out to keep a record of the species separate, such as copper, silver, gold, or to be more scientific, all sulphides, sulphates, etc. The purpose of the collection should be kept in mind when setting up the categories.

目录应当保存的所有矿物收藏家，我相信，最好和最简单的方法是一个笔记本从第一，并作为标本，加上收集，有多少二，三，四等，从这个名单上任何数量的类可以工作，以保持创纪录的物种分开的，如铜，银，金，或以更加科学，所有金属硫化物，硫酸盐等，收集的目的，应该铭刻在脑海里时，设立分类。

The result indicates that the potential-pH equilibrium diagram, solution's practical pH and metal corrosion's measured potential at corresponding temperature must be used when potential-pH equilibrium diagram is used. And also the potential-pH equilibrium diagram in Fe—H〓O system at different temperature is gathered and classified. According to thermodynamics data, the relation equation of water ionization equilibrium constant K〓 and of ammoniac equilibrium constant K〓 to temperature T is respectively derived.

二、高温电位-pH平衡图的应用与高温溶液实际pH值的计算对高温电位-pH平衡图的应用方法和溶液的高温实际pH值进行了分析和计算，指出在用电位—pH图进行分析时，必须使用相应温度下的电位—pH图、该温度下溶液的实际pH值和金属腐蚀电位测量值，并对各种温度下Fe—H〓O体系的电位－pH图进行了收集归类。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。