drawing primitives bandpass pyramid filter 绘图图元金字塔滤波器
Drawing 1 is bar chart of electro filter high-low voltage electrical control system.
图1是除尘器高低压电气控制系统方框图。
It analyses and studies the operating method in image processing area, including image division, image filter, picking up edge point, drawing up line and getting the distance of parallel lines.
分析并研究了可用于指针图像处理的图像分割、图像滤波、边缘点提取、直线拟合、平行直线求距等运算方法。
Practices indicate that comparing with traditional oil filter, pitman style & up-drawing core structural oil filter is easier to discharge, wash and replace.
实践证明，与传统滤油器相比，拉杆式上抽芯滤油器更易拆卸、清洗和更换。
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