The sows farrowed in winter had the highest NSB and the lowest PBA;
冬季分娩的母猪具有最高的NSB ，秋季最低；
If after adjusting the wrap nut still cannot meet clearance dimension value, the case shall then be fixed farrowed adjustment nut stent upward mention.
若调整握把螺母后仍达不到间隙尺度值，则应将固定拉线调整螺母的支架向上提一下。
If after adjusting the wrap nut still cannot meet clearance dimension value, the case shall then be fixed farrowed adjustment nut stent upward mention.
若调整握把螺母后仍达不到间隙尺度值，则应将固定拉线调整螺母的支架向上提一下。
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