流水线的英文：
production-line
stream line
assembly line
progressive assembly line
pipeline
pipelining

参考例句：

The production process of this assembly line has been designed with the newest technology.
这条流水线的生产流程属最新工艺。

progressive assembly
流水线

Assembly line
装配流水线;装配生产线

An assembly line turning out cars.
生产小汽车的流水线

A new assembly line will go on-stream next week
一条新流水线下星期将投入生产。

production是什么意思：
n. 生产；产量；排演；产生；演出，作品，产品

productive farmland; his productive years; a productive collaboration.
多产的农田；他的多产年；多产的合著。

The products are of poverty.
这批产品质量很差。

Mechanic Products
机械产品学

line是什么意思：
n. 线条，界线，路线；条纹；排；铁路线；生产线；台词；态度；防线；前线
v. 用线标出，划线于；使布满纹络；加衬里于；排队，排列成行

This is a lined trunk.
这是一个有衬里的箱子。

They are politically in line.
他们在政治上意见一致。

On a map there are horizontal lines and vertical lines.
在地图上有水平的线和垂直的线。

stream是什么意思：
n. 小河，溪；潮流；流，股；一连串；班，组
v. 飘扬；流；涌进，涌出；照射；按能力分班（组）

Droplets become streams,and streams,rivers
大江不舍细流

The stream splits into three smaller streams at this point.
这条溪在这里分岔出三条小溪。

The small streams rise when the main stream is high; when the main stream is low, the small streams nm dry.
大河有水小河满，大河无水小河干。