米格魯 asked in 科學數學 · 1 decade ago

單位的問題 (t/a)?(15點)

原文 3.3 million t/a

t/a t代表ton

那a代表啥意思????

Update:

原文

BPA is an important intermediate used for the manufacture

of epoxy, polycarbonate, phenoxy, and polysulfone resins and

accounts for large production volumes of about 2.8 million t/a on a global scale

是說地球雙酚A的產量,給你做個參考....謝謝

1 Answer

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  • 1 decade ago
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    acre(英畝)

    目前只想到這個答案,這單位像是某東西的單位土地產量或蘊藏量。

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