§10-2恒定电流 §10-3恒定电流的磁场 §10-4恒定磁场中带电粒子的运动 §3铁磁性与铁磁质 10-3-2毕奥-萨伐尔定律 10-3-3恒定电流磁场的 10-4-1磁场对带电粒子运动的作用 10-4-2霍耳效应 10-4-3电流在磁场中的受力安培定律 10-4-4磁场对载流线圈的作用 10-4-1磁场对运动的带电粒子的作用 10-4-3磁场对载流导线的作用 10-4-4磁场对载流线圈的力矩

1.试回答和解释下列事实： （1）PdCl2·2PF3 比 PdCl2·2NH3 稳定？而 BF3·NH3 却比 BF3·PF3稳定得多？这是为什么？ （2）相应的化学式为 PtCl2(NH3)2 的固体有两种异构体（顺、反），它们的颜色不同，一种是棕黄色，另一种是淡黄色；它们在水中的溶解度也有差别，其中溶解度较大的应是哪一种？为什么？

3-1: The Composition of GDP 3-2: The Demand for Goods 3-3: The Determination of Equilibrium Output 3-4: Investment Equals Saving:An Alternative Way of Thinking About Goods-Market Equilibrium 3-5:ls the Government Omnipotent?A warning

对CSP生产的700 MPa级高强钢板卷上表面氧化层进行了研究.发现钢卷沿卷长方向头部、中部氧化层主要由Fe+Fe3O4共析组织构成,而尾部则主要由Fe2O3层和Fe3O4层双层组织构成.沿板宽方向,边部的氧化层较厚,离边部越远,氧化层越薄.从边部到板宽中心,Fe2O3层和Fe3O4层的比例逐渐减少,Fe+Fe3O4共析组织逐渐增加,到距边部300 mm时氧化层几乎全部由Fe+Fe3O4共析组织构成.相较于CSP生产的SPHC钢,前者氧化层厚度对板卷厚度变化不太敏感

3-1 力线平移定理 3-2 平面任意力系向一点简化 3-3 平面任意力系的简化结果 合力矩定理 3-4 平面任意力系的平衡条件与平衡方程 3-5平面平行力系的平衡方程 3-6静定与静不定问题的概念·物体系统的平衡

◆ 3D打印技术定义与基本概念 ◆ 3D打印材料与生物3D打印工艺 ◆ 3D打印机的构成及工作原理 ◆ 逆向工程与有限元建模 ◆ 3D打印设计与制造 ◆ 3D打印在康复辅具领域中的应用

The difference betWeen the systems of CaO-SiO2-H2O and CaO-SiO2-Al(OH)3-H2O, was studied,especially the effect of Al3+ on the crystallinity of tobermorite was focussed. As a result, in the system of CaO-SiO2-H2O, tobermorite formed early, howevey, with reaction time forward, tobermorite was replaced by xonotlite. So far as CaO-SiO2-Al(OH)3-H2O was concemed, hydrothermal reaction was carried out under the same condition as CaO-SiO2-H2O to study the morphological changes of tobermorite crystals. It was found that Al3+ accelerated the crystal growth of tobermorite to some extent and was in favor of platy crystals. Moreover, with the Al3+ content increasing in the starting material, the morphology of tobermorite did not change magnificently, but platy crystals became more and more eminent. As soon as the Al2O3