building-block

Unsaturated transition metal thiocarbonyl complexes are building blocks for stable organometallic complexes and play important role in catalysis and biology.The CS molecule is isovalent with CO.

过渡金属硫代羰基合仅在催及具有重要作用，而且这些合是许多稳定的金属有机合的结构单元。

Aerocrete building block product to replace non-burning and cement brick building block for building wall body top of products of material of products finally too.

加气混凝土砌块产品也是最终取代免烧砖水泥砖砌块制品的建筑用墙体材料的产品之最。