ChemicalBook 为您提供HRM Analysis Kit (EVAGREEN) (FP210-02)|HRM分析试剂盒(EVAGREEN)(FP210-02)的供应商,生产企业,生产厂家。
天线阵面散热设计是雷达结构设计中的重要内容,它对提高天线系统的可靠性,保证雷达系统的正常可靠工作等具有重要的意义。同时,随着科学技术的不断进步和发展,热仿真分... 梅启元 - 全国电子机械和微波结构工艺学术会议 被引量: 22发表: 2006年 一种Ku频段相控阵阵列天线和终端 本发明提供的Ku频段相控阵阵列天线是一...
目的:了解腭裂整复术的时间对单侧完全性唇腭裂患者面部形态的影响. 方法:对46名13岁以上的非综合征性单侧完全性唇腭裂患者和38名性别及年龄与之相当的无裂者来进行对比研究.本研究通过测量颅颌面三维方向的26个指标来评价面部形态.统计采用t检验,单因素方差分析及秩和检验方法. 结果:本研究结果表明4岁后行腭裂整...
摘要: 国家科技部部长徐冠华为大会召开致辞,宋健,郭树言,谢绍明,段瑞春,怀国模荣获中国技术市场建设功勋奖.DOI: CNKI:SUN:KJCH.0.2003-05-003 年份: 2003 收藏 引用 批量引用 报错 分享 全部来源 求助全文 kns.cnki.net 相似文献化"危"为"机"创新驱动技术市场快速发展——在2009年中国技术市场协会年会暨金桥奖...
战后,朝鲜半岛化为美苏划定势力范围的地带.为在半岛扶植起一个亲美政权,杜鲁门政府自占领朝鲜半岛南部时起,便开始向南朝鲜提供大量援助.伴随冷战的爆发,尤其自朝鲜战争以来,美苏对朝鲜半岛的争夺加剧,韩国成为美国在东亚保卫自身实力与盟友安全的重要反共堡垒.对韩国的援助政策也因此受到冷战的影响,随不同时期美国全球战...
PROBLEM TO BE SOLVED: To solve the problem of the irregular surfaces of a conventional rail in such a manner that the irregularities of the rail not only accumulate soil and sand and dust singly but also are a hindrance to the passage of a physically handicapped person and the aged although...
Improving the efficiency of organic Rankine cycle (ORC) is the ultimate goal of the researchers with thermodynamic background. As the "blood" of ORC, the working fluid plays a vital role to the improvement of the performance. The thermos-physical properties parameters, transport parameters and oth...
PROBLEM TO BE SOLVED: To solve the conventional problem that exchange time of an oil absorbing material filled into an oil-water separator is unclear because drain is treated without grasping an amount of the drain generated from a compressor sufficiently.;SOLUTION: The generated drain is led into...
PURPOSE: To provide a pressurizing device for a stress cone, which is capable of keeping an interface pressure between the stress cone and a cable core in constant, by a method wherein pressure abutment between the stress cone and the cable core or especially sufficient pressure abutment betwee...
PROBLEM TO BE SOLVED: To provide a roll for continuous hot dip metal coating which is excellent in corrosion resistance, heat resistance and wear resistance, lightweight to be easily rotated, and capable of preventing cracks when the roll is placed in a bath and rotated or when the roll is...