刚构桥:其腿和梁垂直相交呈门形构造,可分为单跨门构、双悬臂单跨门构、多跨门构和三跨两腿门桥。前三种跨越能力不大,适用于跨线桥 ,要求地质条件良好,可用钢和钢筋混凝土结构建造。钢构桥:主要的设计概念是以最少种类的单元构件,拼装成能...
3. 满足家庭成员平衡测试 家庭成员平衡测试是指符合担保资格的子女(即sponsor)占子女总数的至少一半,或者在澳洲居住的子女要比在其他任何一个国家多。 比如有2个孩子,一个在澳洲,一个在其他国家,就符合家庭成员平衡测试。有3个孩子,一个...
For crystallographic data in CIF or other elec... The palladium(II) decorated tungstobismuthate(III) [Pd3(H2O)9Bi2W22O76]8(1) has been prepared by a simple one-pot reaction of PdCl2with Na12[Bi2W22O74(OH)2... Li-Hua,Dickman,Michael,... - 《CrystEngComm》 被引量: 0发表: ...
A process for the preparation of the Glycidylpolyaether of di- or trihydroxy-1, 3, 5-triazines W Hofmann,P Zuppinger 被引量: 0发表: 1957年 Solid polymer single-ion conductors: Synthesis and properties The OIC was formed by sol-gel reaction of the three precursors: the sodiumsalt of 3-...
Top‐Down and Bottom‐Up Forces in Food Webs: Do Plants Have Primacy Mary E. Power, Top-Down and Bottom-Up Forces in Food Webs: Do Plants Have Primacy, Ecology, Vol. 73, No. 3 (Jun., 1992), pp. 733-746 ME Power - 《Ecology》 被引量: 2554发表: 1992年 加载更多...
摘要: 6月13日,2022年度"欧洲防务与安全展览会"(又称欧洲萨托利防务展)在法国巴黎勒潘特展览中心开幕.德国莱茵金属公司首度公开亮相的KF51"黑豹"主战坦克成为展会上最为吸睛的"未来装备".不过,它是否真如开发商所声称的,是首款采用全新设计理念的第四代主战坦克,却是见仁见智之事.关键词:...
Marriage affinity question, or, Marriage with the sister of a deceased wife fully discussed 来自 Semantic Scholar 喜欢 0 阅读量: 1 作者: J Gibson 收藏 引用 批量引用 报错 分享 全部来源 求助全文 Semantic Scholar 相似文献The "Marriage with a Deceased Wife's Sister Bill" Controversy: Incest ...
This invention provides for a shock absorber or spring mounting attachment which can be mounted on virtually all existing wheelchair frames in order to cushion the occupant from the shock and jolting now experienced when the main drive wheels of the chair pass over irregularities in the traveled su...
Circuit arrangement for the power supply of a capacitor motor, in particular for compressor - kaeltemaschinen or the like, from a direct current source SHD Ing 被引量: 0发表: 1980年 A compressor unit, in particular for kaeltemaschinen JS Dyhr,HCS Andersen,BA Karll 被引量: 0发表: 1980年...
this invention, through form compensation traction expedient (1), turning angle is driven synchronously the bracket axle (KW) by, to operate the injection element (NW) it had, it regards the pump - nozzle - injection element of the internal combustion engine or the drive for the jet pump. ...