对称取向 meaning in English
symmetrical orientation
Examples
- It also has stronger hydrogen bond which can result in partly physical crosslinkage in polymers , which can fasten orienting of chromophore . all these benefit to obtain high nlo coefficient . in chapter one , some basic conceptions about lc and the advance in lcpu are described , especially the synthesis methods on lcpu and the influence factors of lcpu formation liquid crystalline phase
聚氨酯液晶是分子排列具有一定取向的聚合物材料，可为非线性光学聚氨酯提供一种较好的非对称取向的介质环境，聚氨酯中还存在较强的氢键作用，使得聚合物材料有部分物理交联，能固定发色团的取向，这些因素有利于获得较大的非线性光学效应。