1. A well-defined array of stable fringes results and the field is spatially coherent. 结果得到一组完全确定的稳定条纹，而光场是空间相干的。
2. The second large benefit is that it forces us to create well-defined interfaces between components. 第二个很大的好处是它迫使我们去创造组件之间定义良好的接口。
3. Atom transfer radical polymerization(ATRP) is an effective route to synthesize polymers with well-defined structures. 原子转移自由基聚合（ATRP）技术是合成结构规整性聚合物的有效途径。
英英解释
adj.
1. having a clean and distinct outline as if precisely cut along the edges
2. accurately stated or described
