b.y. in Vietnamese

viết tắt của billion years

Sentence patterns related to "b.y."

Below are sample sentences containing the word "b.y." from the English - Vietnamese Medical Dictionary. We can refer to these sentence patterns for sentences in case of finding sample sentences with the word "b.y.", or refer to the context using the word "b.y." in the English - Vietnamese Medical Dictionary.

1. As atmospheric oxygen increased the ocean contained an oxic surface layer and Anoxic deep water from about 2.5 b.y

2. One is represented by the 3.42 b.y. old aluminous basalt fragments, the other by the dominant component in the microbreccia fragments and basaltic glasses.