三廉，主治瘰疬结核，用连翘、脂订等分为末，随时吞服等。
它是针、药、灸三结合的复合型刺灸法，具有简、便、廉、验四大特点。
It is the needle, medicine, moxibustion three combinations of the compound acupuncture and moxibustion, a simple, convenient, cheap and effective four characteristics.
由于采用三线并绕，廉栅极绕组的圈数也是固定了，并且和上面所计算的初级圈数一致。
Since the transformer is trifilar, the turns between the screen grids are fixed and correspond to the number of primary turns already calculated.
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