Main factors of magnetic intensity and polardistance influencing the dry high magnetic separation were studied in this paper.
本文对影响干式强磁分选的主要因素磁场强度和极距进行了试验研究。
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So, in a way, you can think of these as a space analog of polar coordinates because you just use distance to the origin, and then you have to use angles to determine in which direction you're going.