The general formulation is deduced, by which the simulation program for VASS NMR powderpattern is set up.
推导出普适公式，并据此建立VASS NMR粉末谱型的拟谱程序。
2
It is convenient to substitute carbon powderpattern or characters for printing matrix in gold blocking machine.
以碳粉图案或碳粉文字替代烫金机模板上的印模，而可省略印模雕刻的麻烦步骤。
3
Conical shaped disc attached to the end of the powder gun to evenly distribute the powder in a 360o pattern. Used to shape and direct the powderpattern.