虽然统计学的历史方法已经长期用于生产上，但是统计过程控制成为一种较为普遍的现象，在许多情况下，成为一种较为普遍的要求，却是近几年的事。

Even though the historical measures of statistics have been long utilized in the manufacturing sector, it is not only until recently that SPC became more common place and in many instances, required.

youdao

虽然统计学的历史方法已经长期用于生产上，但是统计过程控制成为一种较为普遍的现象，在许多情况下，成为一种较为普遍的要求，却是近几年的事。

Even though the historical measures of statistics have been long utilized in the manufacturing sector, it is not only until recently that SPC became more common place and in many instances, required.

youdao