[机] by-pass a heating coil in tower
zài tǎ zhōng páng jiē jiā rè xuán guǎn ㄗㄞˋ ㄊㄚˇ ㄓㄨㄥ ㄆㄤˊ ㄐㄧㄝ ㄐㄧㄚ ㄖㄜˋ ㄒㄩㄢˊ ㄍㄨㄢˇ