成批生产的结构部件
mass produced structural units
次生产前沿面
the secondary production frontier
次生产物
secondary metabolic product
secondary material
after-product.
次生生物－热解混合成因气
secondary biogenetic-pyrogenation gas
大型单件小批生产
large one-kind and small-batch production
large-piece OKP
单件小批生产
job-shop production
single and mini-batch production
Single-Piece and Small-Batch Production
Single unit small serial production
piece OKP