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For valve with Arrow Position Indicator, add the letter "I" before the dash separator (e. g., 4423i-025).
对于带箭头位置指示器的阀门,在破折号之前加上字母“I”,例如:4423i- 025。
youdao
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For valve with Arrow Position Indicator, add the letter "I" before the dash separator (e. g., 4423i-025).
对于带箭头位置指示器的阀门,在破折号之前加上字母“I”,例如:4423i- 025。
youdao