When calculating, only function of the longitudinal generating curve of the revoluted curved surface and the value of the projecting angle are needed to be substituted into these formulas.
这些公式的运用很简便，只常将回转曲面的纵母线函数及投射角的值代入即可。
The projecting beam angle can be manually adjusted using a screwdriver, and the adjustable power setting reduces hot spots and washouts.
投影光束角度可使用螺丝刀手动调节，可调节电压的设置能降低热点和冲刷的伤害。
The projecting beam angle can be manually adjusted using a screwdriver, and the adjustable power setting reduces hot spots and washouts.
投影光束角度可使用螺丝刀手动调节，可调节电压的设置能降低热点和冲刷的伤害。
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