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- fixed in the earth coordinate system 固定于地球的坐标系
- The research of the rare earth has been concerned more and more intensively, particularly in the rare earth coordination chemistry field. 摘要稀土领域的研究日益受到人们的关注,尤其在稀土配位化学领域。
- The rare earth coordinated catalytic system was used to catalyze the copolymerization of CO 2 and ECH. Then the aliphatic polycarbonate ECH-CO 2 was synthesized. 利用稀土络合催化体系催化二氧化碳 (CO2 )和环氧氯丙烷 (ECH)共聚反应 ,合成出新型高分子材料脂肪族聚碳酸酯 (ECHCO2 )。
- The copolymerization of chloromethylthiirane(CMT) with epichlorohydrin(ECH) was investigated by using rare earth coordination catalysts for the first time. 研究了稀土配位催化剂对难以开环均聚和共聚的环硫氯丙烷(CMT)与环氧氯丙烷(ECH)的共聚合。
- In this thesis,the rare earth coordinated catalytic system was used to catalyze the copolymerization of CO 2 and ECH. The aliphatic polycarbonate ECHCO 2 was synthesized. 二氧化碳 (CO2 )和环氧氯丙烷 (ECH)在稀土络合催化体系作用下共聚反应 ,合成出脂肪族聚碳酸酯 (ECHCO2 )。
- Our pilotless rocket enters the track of the earth. 我们把一个无人驾驶的火箭送入了地球的轨道里。
- Three rare earth coordination compounds of RE (Bim)2 HCI. 4H2O (RE=La, Pr, Nd, Bim=Benz Benzimidazole )have been synthesized and characterized by elemental analysis, IR, UV, malar conductivity measurements) X-ray powder diffractions and TGA-DTA. 制备了 3种稀土(La,Pr,Nd)氯化物与苯并咪唑的配合物,用化学分析、元素分析确定其组成为 RE(Bim)2· HCl· 4H2O(Bim为苯并咪唑)。
- The attraction of the moon for the earth causes the tides. 月球对地球的吸引力造成潮汐。
- The earth is only a speck in the universe. 地球在宇宙中只不过是一个小点罢了。
- How on earth do they manage to rob the bank? 他们到底怎么抢了银行的?
- A number of satellites are now circling the earth. 一些人造卫星现在正环绕地球飞行。
- The machine cast up a big heap of earth. 机器卷起了一大堆泥土。
- The red sun lights up the sky and the earth. 红太阳照亮了天空和大地。
- Who on earth is that female he's with? 跟他在一起的那个女人究竟是谁?
- Antarctica is the loneliest place on earth. 南极是地球上最偏远的地区。
- He dived his hand into the earth. 他将手插入泥土中。
- Earth worms are often used as bait. 蚯蚓常用作鱼饵。
- The earth in the garden is good, soft soil. 花园里的泥土松软肥沃。
- Many kinds of animals have vanished from the earth. 许多动物已人地球上消失了。
- The heavy wheels churned the earth into mud. 笨重的车轮将大地碾成了泥浆。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries