sap stains 中文意思是什麼
sap stains
解釋
邊材變色 木材之邊材因含多量水分故較易發生變色-
Surface prep or " cleaning " is a separate process designed to safely remove swirls, scratches, acid rain etchings, pore - imbedding stains, tree sap, dead - oxidized paint, as well as stubborn surface contaminants that regular washing will not remove
預洗表面或「清潔」與安全的去除螺旋紋、劃痕、酸雨的腐蝕物、鑲嵌在小孔的灰塵、樹液、被氧化的漆面、頑固的污物，即一般很難清洗掉的污物是兩回事兒。
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