engraving in relief是什么意思

用法例句

This paper introduces technological process of graining roll on the line of hygienical cloth lined paper by general machine tools.

介绍了用普通机床加工卫生巾生产线压纹齿辊的加工工

In the new design, two additional capacitors with their corresponding switches are implanted, so as to eliminate the output voltage ripple caused by the equivalent series resistance of the output capacitor in traditional method.

在设计中采用两个附加的对称电容器以及相应的开关，以减少由于输出电容的等效串联阻抗造成的输出电压纹波电平。

The working principle of switching power supply was analyzed, main circuit output voltage ripple diagram given out after the system was debugged.

介绍了基于NCP1014芯片的开关电源设计,分析了开关电源的工作原理,给出了调试处理后的主电路输出电压纹波图。

However, PSM also has some disadvantages: large output voltage ripple and audio noise at light load.

本文主要工作包括以下几个方面内容:1)对工作于DCM模式的PSM变换器变换效率及输出电压纹波进行研究,并与相同条件下的PWM和PFM变换器模式性能进行比较。