Epoxy cast dry-type distribution transformer high-voltage coil sealed by epoxy resin casting, using epoxy resin performance, cracking, high temperature, high mechanical strength, long life.
环氧浇注干式配电变压器高低压线圈都由环氧树脂浇注密封， 所采用的环氧树脂性能好， 抗裂， 耐高温， 机械强度高， 寿命长。
The geographical distribution, life type and medical function of 38 major medical species of medical ferns is primarily introduced in this paper.
本文主要介绍38种药用蕨类的分布、生活型、药用功效。
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