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ѤҪԡ
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ʶԵ

: 4185704
й 39 ؤŷ ͹Ź
s
ͧ
single lens microscope ͧŷȹ쪹ԴŹ 1115
single slit 757
Singularity 1790
sky wave 735
slide projector 788
slip ring 1297
slit 679
slope 684
smoke cell 501
Sn պء 1137
Snell law 2084
soap ʺ 1137
soda ash ⫴ͪ 2511
sodium hydroxide δ͡䫴 1658
sodium 821
soft iron 761
soil Թ 767
solar air system collector 701
solar cell 452
Solar cell 417
 
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