The symptoms are often mild or no, tongue and pulse can be normal.

自觉症状常较轻或无，舌脉亦可正常。

youdao

But in normal temperature this change needs huge current pulse generator which cost is expensive.

但在常温下使基体组织发生变化需要庞大的脉冲发生器组，成本造价高。

youdao

But in normal temperature this change needs huge current pulse generator which cost is expensive.

但在常温下使基体组织发生变化需要庞大的脉冲发生器组，成本造价高。

youdao