Initial heating of the phenol and formaldehyde (in the presence of an acid or base to get the reaction going) produced a shellac-like liquid good for coating surfaces like a varnish.
开始加热，酚和甲醛(需有酸或碱促使其反应进行)便产生了像紫胶样的液体，能像清漆一样涂于物体表面。
To do this, you will need to strip off any varnish, shellac, paint, etcetera , that is on it.
为此，您将需要带过任何的研磨剂，虫胶，油漆，等等，这是它。
If you use colour stain, can say take alcohol solution dye 6 points, alcohol 70 points and shellac varnish 24 points, mixed evenly, with manual brush or spraying dyeing.
若采用酒色染色，可称取醇溶液染料6分、酒精70分及虫胶清漆24分，混合均匀后，用手工刷涂或喷涂染色。
Base on the knots, application of shellac varnish resin parts closed, oily putty inlaying nailhole place application.
基层上的节疤、松脂部位应用虫胶漆封闭，钉眼处应用油性腻子嵌补。
Baekeland's original goal was to come up with a shellac and varnish substitute that, after being applied to a piece of wood, would harden into an insoluble state by a chemical reaction.
贝克·兰德最初的目标是找出虫胶和清漆替代品，加入一些木屑后，将硬化成不受化学反应的非溶解性固体。
Baekeland's original goal was to come up with a shellac and varnish substitute that, after being applied to a piece of wood, would harden into an insoluble state by a chemical reaction.
贝克·兰德最初的目标是找出虫胶和清漆替代品，加入一些木屑后，将硬化成不受化学反应的非溶解性固体。
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