求翻译：6、 如果送料困难，检查三角带是否张紧；送料螺杆与漏斗是否阻卡；是否超过物料临界转速；是否物料比重太轻；或物料湿度太小或太大。是什么意思？

6, if feeding difficulties, check whether the triangle belt tensioning; whether the feeding screw and funnel resistance card; exceeding critical speed of material; whether the proportion of material too light; or material humidity is too small or too large.