We also have designed and constructed over 40 basic machinery components factories which constitute the backbone of the field.

在机械基础件方面；由我院承担设计并建成投产的企业有40多家；

youdao

We also have designed and constructed over 40 basic machinery components factories which constitute the backbone of the field.

在机械基础件方面；由我院承担设计并建成投产的企业有40多家；

youdao