Through R & D on the preparation of black weeding mulching film, the adequate recipe of black masterbatch and the manufacturing technology of black weeding mulching film were developed.
通过对黑色除草地膜的研制，找到较为合理的黑色母粒的配方以及黑色除草地膜的生产工艺。
2
A river of western European U. S. S. R. rising in the southwest Ukraine and flowing about853 km(530 mi) generally southeast to the Black Sea.
布格河西欧的一条河流，位于苏联乌克兰西南部，全长853公里（约530英里），主干向东南流入黑海。
3
A city of southern European U. S. S. R. on the northeast shore of the Black Sea. It is a popular health resort. Population, 310,000.