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acoustic metrology
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acoustic metrology
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声学计量
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acoustic metrology
声学计量
关于声学测量的学科。是在声学领域内研究计量单位统一和量值准确可靠的计量学分支。
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Silk Tapestry of Mei Flower and Winter Magpie Painting by Shen Zifan
Silk Tapestry of Qiu Ying's Hou Chibi Fu Painting
Silk Tapestry of Zhao Chang's Flower Painting
Silk Tapestry of Zhao Ji's Flower and Bird Paintings
Silk Tapesty of The Painting of Queen Mother of the West's Birthday Celebration at Jade Pool
silk textiles of Tang dynasty preserved in shosoin
silk thread
silk tree
silktree albizia bark
silk Vajrabhairava Mandala
silk voile
silk weaving
silkworm chrysalis
silkworm cocoon
silk-worm droppings
silkworm excrement pillow
silkworm industry
silkworm weaving skills
silky oak
sill
Silla Art
Silla Gold Crown
Silla maidservant
sillimanite
sillometer
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