by bulk短语¹⁴⁴⁹⁷²⁺² 基本例句 估堆,按堆 The structural characteristics of BLF43 prepolymerizer were introduced. In the production of PVC resin by bulk polymerization, the BLF43 prepolymerizer could well meet the process requirements. 简要介绍了 BL F43型预聚合釜的结构特点，该釜应用于本体法 PVC树脂的生产，较好地满足了工艺要求。 chemyq