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标准上有的:1 C% {4 b2 Y/ I' p( V! M+ I6 @/ d9 o. K
To allow for the fact that the average temperature of windings of universal motors, relays, solenoids and7 I4 n* Q! y9 f! c3 S
similar components is usually above the temperature at the points on the windings where thermocouples are* O1 t' I! e3 J3 O
placed, the figures without parentheses apply when the resistance method is used and those within- c( U. M" F" ]* `: k/ d
parentheses apply when thermocouples are used. For windings of vibrator coils and a.c. motors, the figures- g/ h' K! j- c
without parentheses apply in both cases.5 A' f$ m L3 ?) u* h% X8 h8 N
......, w1 T- `% [+ M3 Q8 v$ f7 T
简单来说,基本上括号内的适用于热电偶发,括号外适用于电阻法 |
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