外表长得一样,但里面不一样 3 c$ M: F6 ^6 i' p& @/ c; p4 `6 h. c. I
one stage T-STAT has "w" wire terminal 5 x% k( y* \/ p+ U; e- O8 ltwo stage T-STAT has "w1" and "w2" wire terminal, C+ `# n0 |: w. P Z( e
$ e' n0 q5 p. l( m! e# f5 R% T2 T! L# R7 d2 Z1 w% B9 O: q# k4 H' b
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