packing debris
packing debris ==> 包装屑 packing density ==> 填实密度,存储密度,充填密度,装填密度,敛集密度,群集密度,(粒状材料)堆积密度=>记录密度,充填密度 ..
lint-free cloth
... tinned steel lids 不起毛布 lint-free cloth 包装屑 packing debris 湿度箱 ...
crumbcloth