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[期刊论文] 作者:Zhi Yong WANG Zheng Gen ZHA 等, 来源:中国化学快报:英文版 年份:2003
In the case of Pd(Ph3)4 as catalyst and toluene as reaction solvent,the desired biaryls and polyaryls were synthesized in excellent yield and on a large scate....
[期刊论文] 作者:高伟,刘镇昌,王霖,Philip Bex,Grace Zha, 来源:工具技术 年份:2003
研制了一种新型环形电镀金刚石线锯,介绍了锯丝基体的制备及锯丝电镀工艺.锯切试验表明该金刚石线锯具有锯切表面质量好、锯切效率高、出材率高等优良性能,尤其适合贵重硬脆...
[期刊论文] 作者:李凤艳,赵天波,孙桂大,李翠清,LI Fengyan,ZHA, 来源:催化学报 年份:2003
Hydrofining catalysts contain Mn-Ni, Ni-Mo, Ni-W, Co-Mo, Mo, W, Ni, Co, etc and many studies of these catalysts are concerned with the addition of phosphorus or...
[期刊论文] 作者:Yu-Long Liang,Ting-Wen Lei,Heng Wu,Jian-Min Sn,Li-Ying Wang,Qun-Ying Lei,Xi-Liang Zha, 来源:城市道桥与防洪 年份:2003
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥...
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