区别: value stream vs valuef low

the difference between value stream & value flow;
5 principles of lean thinking:
1, specify value by product/customer;
2, identify the value stream for each production;
3, make flow value;
4, let the customer pull value from the producer;
5,pursue perfection...

value stream & value flow;中文翻译都叫价值流。
但是Stream侧重于上下的流动，Flow是指平面的流动。
如此就不难理解value stream是指供应链（Chain）上下的价值，而 flow 则单指工厂内的流动。。。