hasbeen相关论文
众所周知 ,由“助动词have(has) +过去分词”这种结构的现在完成时 ,它主要用于表示过去发生或已经完成的某一动作对现在造成的影......
Gold Distribution in Tellurium-Rich Pyrite and Tellurides from the Xiaoqinling Gold District,Souther
Gold is commonly associated with arsenic in As-rich pyrite or arsenopyrite in a variety types of gold deposit,such as se......
<正> Many physical processes of laser-plasma in teraction are relevant to the size of the corona plasma and its density ......
SYNTHESIS OF ZIRCONIUM BIS(MONOOCTYL PHOSPHATE) AND INDEXING ON ITS X-RAY POWDER DIFFRACTION PATTERN
a new compound, zirconium bis（n-monoocfly phosphate）, Zn (n-C<sub>8</sub>H<sub>17</sub>OPO<sub>3</sub>)<sub>2</sub>, in am......
γ-Fe_2O_3气敏材料的特点是无需贵金属掺杂即可获得实用化的灵敏度。其缺点是选择性差,稳定性不好。γ-Fe_2O_3是氧化铁的一种介......
AN INVESTIGATION ON THE MATHEMATICAL MODEL OF ELECTRODE DIFFUSION PROCESS IN THE DETERMINATION OF DI
The mathematical model of diffusion process in polarographic determination of dissolved oxygen hasbeen thoroughly studi......
【正】 China’s chlorine and caustic demand has started at a relatively low base in the early 2000s.However,from the yea......
【正】 The project of transmitting natural gas fromSichuan province to eastern China, thenation’s one of significant pr......
The technical renovation project at Yunnan TinCo. Ltd. is running smoothly, according to anindustry report. The project......
13岁的尼哈·拉穆来自伦敦的索比顿。她在门萨智商测试中获得162分,这可能是测试中最高的分数,比斯蒂芬·霍金更聪明。如果智商高......
A novel flavanol bearing phenylpropionic acid moiety at C-4 through a C-C bonding,named brainin A(1),was isolated from t......
Zhenhua Oil Co.,Ltd.,a subsidiary of ChinaNorth Industries Group Corporation,hasbeen given the license of crude oil imp......
A series of novel Michael addition products of fluorene to chalcone were obtained in the presence of sodium hydroxide un......
Heterogeneous catalysis is a key technology for chemical and materials synthesis,fuel production,power generation and co......
The field of geomorphology is one common to all students of earth spiences.Every geographer and geologist, in going to t......
Low-temperature charged impurity scattering-limited conductivity in relatively high doped bilayer gr
Based on semiclassical Boltzamnn transport theory in random phase approximation, we develop a theoretical model to inves......
Objective To study the validation of ultrasound-based strain rate imaging in the quantitative assessment of right ventri......
Chinese vehicle population sees a high-speed development, which increased by 20% annually in the past 10 years. And in ......
To the Editor:With interest we read the article by Wu etal on a 53-year male with agenesia of the right lungand left-ve......
Postcardiac syndroanlnlation of theme(PCIS)15 characterized by Pericardium,Pleura andPulmonary Parenehyma following a ea......
Developing the Northern Bund Shipping Industryas a Part of the Shanghai InternationalShipping Center
Hongkou District is one of Shanghai’s downtown areas.The northem Bund,adjacent to the Huangpu River and Suzhou Greek,i......
Tennis elbow, which is also called lateralepicondylitis of humerus, is a common clinicaldisease. Treating it with heat ......
A lthough many Chi nese businesses stilldeliver their products to retail-ers themselves, China’s profes-sional logistic......
Good morning. It gives me great pleasure to make a speech to this “ Shanghai - Hong Kong Port Logistics Seminar” on b......
It is demonstrated the high thermal sensitivity of fiber Bragg grating with polymer jacket. Twenty-three times enhanced ......
In this letter, an improved optimal velocity model was proposed that assumes the effect of relative velocity deceases wi......
Effects of Growth Conditions on Optical Properties ofGa In NAs/Ga As Quantum Well Grown by Molecular
During the process of molecular beam epitaxy employing a DC plasma as N source, the effects of the growth temperature, g......
The behavior of Si 1- x Ge x /Si heterostructures under different annealing conditions has been studied. It ......
PetroChina’s managementdepartment for coal-bedmethane(CBM) exploration project hasbeen engaged in CBM for eight years.I......
LONG dominated by South Korea it hasbeen a Chinese dream to take the TaeKwon Do crown out from under thekimchi-eater’s......
The solid state power amplifiers developed in Nanjing Electronic Devices Institute pos-sess small volume,high gain and r......
ISSN 1674-3393,CN 11570/G2;Price:$US 199/VolumeChinese Journal of Library and Information Science(CJLIS)is the first and......
The structural and surface properties of high-quality epitaxial cubic MgxZn1-xO films deposited by pulsed laser depositi......
近年来,对外通讯和联系日益频繁。而国外的学校、商业机构、专家、学者对于公文的质量很重视。所以公文质量的好坏,或多或少地会......
中国保龄发展现状中国保龄运动的起步较晚,过去只在部分大城市的为数不多的高档宾馆、酒店作为附设项目,供客人娱乐,外人很少涉足......
The crystals of pentafluoropropionylbenzoylmethylene triphenylphosphorane thatbears two strongly electron-withdrawing g......
N’-(2tetrahydrofuranyl)-5-fluorourancil, C_8H_9FN_2O_3,, crystals are triclinic system, a=6.004(2),b=9.022(8),c=16.702......
ON January 14,2003,Pudong published thefoilowing item on itsWebsite:“In 2002Pudong New District witnessed itshighest i......
他们是依靠薪水生活,以知识和技术提供服务的白领阶层。他们收入稳定,薪金丰厚。虽然他们各自的生活方式不尽相同,但他们都有一个......
Ⅰ. INTRODUCTION From the considerations of the scattered oil occurrences and suitablegeological structures, the Red Ba......
SUIYANG County in north- ern Guizhou is known in the region as an incubator of poets. County records compiled from the e......
One of the common fossils from the Ordovician of central China has been repeatedly described as Triplecia poloi§(Fig. ......
Preparation and Characterization of Phenolated Wood Using Sulfuric Acid as a Catalyst I: Liquefactio
Chinese fir (Cunninghamia lanceolata) and poplar (Populus spp.) wood meal were phenolated in the presence of sulfuric a......
G20 leaders achieve breakthroughs in sustaining economic recovery and reforming the international financial system at th......
