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宇宙創生を開始した。

1Nanashi_et_al.
AAS
神様は、僕に必ず辿り着く。

2019/02/20(水)05:33:13.10(C6hxU/ap0)


2Nanashi_et_al.

AAS

NG

ハーバード大学主席。

2019/02/20(水)05:33:37.94(C6hxU/ap0)


3Nanashi_et_al. [sage]

AAS

NG

It is also a common starting point for bismuth chemistry.
It is found naturally as the mineral bismite (monoclinic) and sphaerobismoite (tetragonal, much more rare),
but it is usually obtained as a by-product of the smelting of copper and lead ores.
Bismuth trioxide is commonly used to produce the "Dragon's eggs" effect in fireworks, as a replacement of red lead.

2019/03/15(金)11:45:22.93(aZiitRAyt)

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