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whm0827銅蟲 (小有名氣)
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[求助]
請(qǐng)高手幫忙翻譯一下
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| The initial and periodic determination of enclosure background emissions shall be conducted according to the procedures specified in §86.117-90(a)(1) through (a)(6). The enclosure shall be maintained at a nominal temperature of 105.0oF throughout the four-hour period. Variable volume enclosures may be operated either in the latched volume configuration, or with the variable volume feature active. Fixed volume enclosures shall be operated with inlet and outlet flow streams closed. The allowable enclosure background emissions of HC and/or methanol as calculated according to 40 CFR §86.117-90(a)(7) shall not be greater than 0.05 grams in 4 hours. The enclosure may be sealed and the mixing fan operated for a period of up to 12 hours before the initial HC concentration reading (CHCi) and the initial methanol concentration reading (CCH3OHi) is taken and the four-hour background measurement period begins. |
木蟲 (正式寫手)
| 根據(jù)§86.117-90(a)(1)至(a)(6)規(guī)定的流程進(jìn)行背景排放的初始和階段性測(cè)量。整個(gè)4小時(shí)階段,箱體保持105.0oF的額定溫度。可變體積的箱體可作為固定體積配置或可變體積功能進(jìn)行操作。固定體積箱體操作時(shí)進(jìn)排氣關(guān)閉。4小時(shí)的許可HC和/或甲烷背景排放根據(jù)40 CFR §86.117-90(a)(7)的計(jì)算不能大于0.05克?梢苑忾]箱體,運(yùn)行混合風(fēng)扇最多12小時(shí),直到獲得初始的HC濃度指數(shù)(CHCi)和甲烷濃度指數(shù)(CCH3OHi),隨后開(kāi)始4小時(shí)背景測(cè)量階段。 |
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