Changes in surface appearance are often more of a problem than is fabric rupture in pile fabrics such as corduroy, velvet, or velveteen . 對某些織物說,例如起絨織物包括燈芯絨、平絨和棉平絨等,外觀的改變比起織物的破損還要重要。
Plywood - classification by surface appearance - general 膠合板.按表觀分類.總則
Plywood - classification by surface appearance - softwood 膠合板.按表觀分類.軟木
Plywood - classification by surface appearance - hardwood 膠合板.按表觀分類.硬木