Colourless single crystals of Ba2Pb4F10Br2-xIx (x = 0-2) have been obtained under hydrothermal conditions (T = 250 degreesC, 10 d), starting from stoichiometric amounts of BaF2, PbF2, PbBr2 and PbI2. The compounds crystallize in the tetragonal space group P4/nmm (No. 129). A ...
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Ba0.9A0.1MnO3 (BM-A) and Ba0.9A0.1Mn0.7Cu0.3O3 (BMC-A) (A = Mg, Ca, Sr, Ce, La) perovskite-type mixed oxides were synthesised, characterised, and used for soot oxidation in simulated Gasoline Direct Injection (GDI) engine exhaust conditions. The samples
Vol24 No3 May 2022 非洲几内亚褐色蓝宝石的宝石学特征 余丽12,潘少逵12 (1.中国地质大学珠宝学院,湖北武汉430074; 2.湖北省珠宝工程技术研究中心,湖北武汉430074) 摘要:以非洲几内亚褐色蓝宝石为研究对象,利用激光拉曼光谱仪、红外光谱仪、激光剥蚀等离子质谱仪 及显微紫外-可见光谱仪系统探究其宝石学特征&研究表明,...
均用死，以泗州来降，授亲军指挥，从征伐。南昌平，命显从大都督朱文正守之。陈友谅寇南昌，显守章江、新城二门。友谅攻甚急。显随方 ①御之，间出锐卒搏战，斩其平章刘进昭，擒副枢赵祥。固守三月，乃解。武昌既平，邓仲谦据新淦，久不下，显讨斩之，因徇下未附诸郡县。以功擢江西行省参政。从徐达等...
colour films ()5. Man-made satellites can also help us ___ to our friends on the other side of the world. A. write downB. send birthday presents C. pay visitD. make telephone calls B John liked chocolate very much. , but his mother never gave him any, because they were bad for...
The hot2came, the small pond had no3, so he wanted to look for another one. Then he4a well(井).Hesatonthewellandlookedintoit.Therewasmuchwater.Thefrogwasveryhappy.He5intothewell. He found that it was6tojumpoutofthewell.He7tostayinthewell.Itwasn'taninteresting8 ()1. A. bigB. small...
They'll come rushing in,2their handbag's been stolen. They'll3that they left it in the changing room, create havoe (混乱) and then4it had been in their car all the time. They'll have out half the5in the shop, and want the only style you don't have left in a6colour. I do ...
纯化水英汉对照-欧洲药典8.0 WATER,PURIFIED 纯化水 H2O M r18.12 DEFINITION Water for the preparation of medicines other than those that are required to be both sterile and apyrogenic,unless otherwise justified and authorized.定义 制药用水不同于其它用水，要求它是无菌的、无热源的，除非另有调整或...
After he gave them all out, he asked his students to2the paper and begin. To everyone's surprise, there were no3, just a black dot in the center of the page. The professor, seeing the4on everyone's face, told them the following: "I want you to write what you5there." The ...