求翻译：丝素的利用价值受其分子量大小的影响，控制分子量的大小是丝素蛋白开发利用的关键，只有丝素蛋白分子降低到一定分子水平之后，其价值效应才能体观出来。是什么意思？

Value of the use of silk fibroin by its molecular size, the size of the molecular weight control is the key to development and utilization of silk fibroin and silk fibroin molecules down to a certain molecular level, the value effect can body concept.

The population of the value of the size of the molecular weight, molecular weight control is the size of development and use of critical proteins, only population of lower protein molecules to a certain level of molecules, their value to be at all.

正在翻译，请等待...

Silk value the impact of its molecular weight size, size of molecular weight control is the key to development and utilization of silk fibroin, only of fibroin protein molecules down to a certain level, its value to view the effect.

The sericin use value its molecular weight size influence, the control molecular weight size is the sericin protein development use key, only then the sericin protein member reduces after certain molecular level, its value effect can the body view come out.