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ѤҪԡ
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ʶԵ

: 3770763
й 50 ؤŷ ͹Ź
b
ͧ
beam 1177
B ͹ 1647
Ba 1617
back e.m.f. ç͹俿ҡѺ 2452
back electromotive force 1027
backfire 582
balance 1319
ballast 1104
Balmer series 916
band theory of solids ɮᶺѧҹͧͧ 1999
barium 1014
barometer 1180
base ҧ, 1118
basin still 578
bass 835
battery 677
battery ẵ 875
battery cell 625
battery charging 636
battery element;element 612
 
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