等离子电源，按切割断面垂直度、切割精度，分普通等离子、精细等离子、类激光等离子。
Plasma power supply, according to cutting section vertical degree, the cutting precision, plasma, fine common points of plasma, laser plasma.
等离子切割，由于融口上面大，下面小，切口断面总有一定斜度，不可能象火焰切割一样垂直，这是一世界性难题。
Plasma cutting, due to melt, the small mouth above, there is always a downward section incision, don't like probably as vertical flame cutting, this is a worldwide problem.
通过LADCP海流资料分析确认研究区域黑潮与PN 断面近似垂直。
That the Kuroshio flowing along the vertical direction of PN section is approved byanalyzing current datum from LADCP.
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