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natural system
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natural system
Encyclopedia
理学
系统学
释
natural system
自然系统
以天然物为要素,由自然力作用所形成的系统。又称天然系统。是指那些不受到人为干扰或影响,或者人为干扰或影响比较小的系统。
Mathematics
natural system
自然
坐标
系,自然标架
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celadon-glazed openwork porcelain pillow with a Moon Palace pattern of Yuan Dynasty
celadon glazed vase with two phoenix-shaped ears made by Longquan Kiln
Celadon lotus porcelain zun of Northern Dynasty
celadon lotus statue
Celadon of Eastern Han Dynasty
celadon well unearthed from ‘ Xiping 4th Year ' tomb
Celaeno
celandine
Celbalrai
Celebrating Mother's Birthday
Celebration of the 60th Birthday Anniversary of Emperor Kangxi
celebration opera
celebration public relations activities
Celebrities of Shangshi in Chinese
Celebrity
celebrity house
celebrity photography
Celedonio Romero
celery
celery bacterial soft rot
celery leafminer
celery leaf spot
celery root-knot nematode disease
Celescope
celescope
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