A. the cooling tower physicalcleaning and sterilizing alga.
冷却塔的物理清洗及杀菌灭藻。
2
Cleaning methods have physicalcleaning and chemical cleaning.
清洗的方法主要有物理清洗和化学清洗。
3
The operation, overturn and physicalcleaning of the stripper-key equipment in the first ammonia stripper urea construction in China were introduced in this article.