求翻译：以每天两次的频率对全厂各Reflow炉进行测试监控，主要监控回流炉的上升斜率、预热时间、回流时问、峰值温度及氮气的各项指数是否在规格范围内。是什么意思？

Frequency of twice a day for the whole plant to test the Reflow oven control, mainly control the rising slope of the oven, preheat time, back when asked, the peak temperature and the nitrogen index is within specifications.

The frequency to twice a day for all members of the plant the Reflow furnace for testing, monitoring and control of the main control reflux furnace rose graph, preheat time, back when asked, peak temperature and nitrogen in the index within the specifications.

Carries on the test monitoring by the daily two time frequency to the entire factory each Reflow stove, mainly monitors the backflow stove when the rise slope, the preheat interval, the backflow asks, the peak value temperature and nitrogen each index whether in specification scope.

To twice-daily frequency on the whole the Reflow furnace test monitoring, main monitor reflow ovens rising slope, Preheat time, returning the index of the time, peak temperature and nitrogen is within a size range.

To twice-daily frequency on the whole the Reflow furnace test monitoring, main monitor reflow ovens rising slope, Preheat time, returning the index of the time, peak temperature and nitrogen is within a size range.