fdf
abbr.
Forced-Draft-Fan 强制通风机，压力送风机;
例句:
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In subsequent cases, the Court clarified the nature of these " FDF " variances.
在随后的案例中, 法院澄清了这些 “ 根本不同 ” 差异的实质.
来自英汉非文学 - 环境法 - 环境法
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The 1987 Amendments added a new subsection, 301 ( n ), expressly sanctioning FDF variances for BAT and BCT.
1987年修正案增加了一个新的细目, 第301条 ( n ), 专门认可了“最佳现有技术”和“最佳控制技术”的“根本不同”差异.
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Nonetheless, some of the individual members of the FDF are taking steps to change their packaging.
来自BBC