At present, the applied research of direct drawing method in a virtual endoscopic technique is also an urgent and an important task that need to solve.
而目前，直接绘制方法在虚拟内窥镜技术中的应用研究，又是一项亟待解决的重要任务。
Modern drawing "direct" , the method and the tool also become the performance content.
现代绘画更“直接”，手段和工具也成为表现内容。
In mountains area, when calculating and drawing the graph for protection area of lightning rod, we can use the direct graphic method.
在山坡地区，避雷针保护范围计算及作图可应用避雷针保护直接作图法。
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