building block

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.

加气混凝土砌产也是最终取代免烧砖和水泥砖砌的建筑用墙体材料的产最。

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.

不饱和过渡金属硫代羰物不仅在催及生物上具有重要作用，而且这些物是许多稳定的金属有机物的结构单元。