A young sow that has not farrowed .

未下过猪仔的小母猪。

Percentage of farrowed sows inseminated artificially for the first to third parity .

纯种母猪第一产至第三产的人工授精率。

If adjusted the clutch wrap , still cannot meet requirements clearance should be unloaded farrowed , through nut block adjustment , if farrowed skin chapping , flex deformation , should replace new pullstring .

倘若调整了离合器握把，间隙仍达不到要求则应卸下拉线，通过螺母上的盖帽进行调整，若拉线外皮龟裂、折曲变形，应更换新拉线。