外表长得一样,但里面不一样 % k# \# E8 _; ~0 s; i3 }! e3 Q4 }) W. s7 t j9 ^- U4 x \1 e' V, v
one stage T-STAT has "w" wire terminal% t- P: A0 b G! R, C9 a
two stage T-STAT has "w1" and "w2" wire terminal9 i# f' l/ ~+ v' Q* W3 T, s. c* h; |
( b3 \* H! O' |. @" J! t9 c7 e, {) K5 x4 [. T$ o2 i
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