Surplus labors in the countryside and insufficient employment, monotonous employment structure and the low quality of working force affect poverty relief program to a large extent.
农村剩余劳动力过多和就业不充分，就业结构单一以及从业人口的素质等都在较大程度上影响着脱贫的步伐。
2
The utility model has the advantages of simple structure, easy manufacture and maintenance, low cost, good tightness, convenient pressure relief operation, etc.