景气动向指数 meaning in Chinese

diffusion index

The large companies ' diffusion index on labour was minus seven
大型企业的劳动力景气动向指数为- 7 。
The closely watched diffusion index of sentiment among big manufacturers ? the number of optimists minus the number of pessimists ? also rose another point to plus 21
受到密切关注的大型制造商景气动向指数? ?持乐观态度的企业数量减去持悲观态度的企业数量? ?也又上升了1点，至+ 21 。