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- Replacement of potassium hydride by sodium methoxide,replacement of hydrogen chloride by HCl-ethanol,and replacement of ether by toluene were in the improved procedure. 以甲醇钠代替氢化钾作为缩合剂;以盐酸乙醇代替氯化氢气体;以甲苯代替乙醚;对此工艺进行了改进。结果:得到较好的工艺条件;总收率达到47.;4%25。
- No potassium did we find in this mineral. 在这种矿石中我们没有发现钾。
- potassium hydride 氢化钾
- Potassium is necessary to the existence of all living things. 钾是所有生物生存必须的。
- The components of a potassium cycle vary greatly. 钾素循环的各个环节有很大的变化。
- A new method is presented to determine trace of Pb.The lead is oxidized to high valendwith potassium ferricyanide and deiermined by hydride generation-spectro-photometry. 本文提出了用铁氰化钾将铅氧化至高价,再用氢化物发生-分光光度法测定铅的一种新方法。
- RECENT DEVELOPMENT OF POTASSIUM CARBONATE INDUSTRY. 碳酸钾工业发展近况。
- In this case, the ion is potassium. 这里的离子指的是钾离子。
- HIGHLY IONIZED POTASSIUM AND CALCIUM SPECTRA. 高度游离钾及钙之光谱(英文)
- Hydride : Inorganic compound of hydrogen with another element. 氢化物: 氢与另一种化学元素的无机化合物。
- Potassium One of the essential elements in plants. 钾:植物体的必需元素之一。
- What fruit vegetable contains potassium most? 什么水果蔬菜含钾最多?
- The pertinent siloxane compounds contain two silicon hydride bonds. 所说的硅氧烷组合物中,含有两类硅氧键。
- Inner Mongolia Rare Earth Ovonic Metal Hydride Co., Ltd. 内蒙古稀奥科贮氢合金有限公司。
- Potassium methoxide, 0.1 N Solution in Toluene/... 甲醇钾0.;1N溶液甲苯/甲醇混合溶剂;
- Kx Potassium salt of Amino Trimethylene ... 氨基三甲叉膦酸钾 ATMP&%238226;
- Hydride : inorganic compound of hydrogen with another element. 氢化物:氢与另一种化学元素的无机化合物。
- First, to provide potassium for crop nutrition. 第一,为农作物提供钾元素营养。
- Can pregnant women use acesulfame potassium? (孕妇可以食用。)
- Potassium permanganate.Determination of the titre. 标准英文名: Agropharmaceutical products.