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木材缺陷
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木材缺陷
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木材缺陷
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wood defect
木材缺陷
树木在生长过程中因生理、病理的原因或者在生产过程中由于人为原因,使其造成的各种损伤和非正常组织结构。
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Space Radio Astronomy
space radio astronomy
spacer DNA
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space reddening
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space remote sensing
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space repairing and maintainning satellite
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Space Requirement
space requirements
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Space Research Institute of the Russian Academy of Sciences
space reversal transformation
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space robots
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Space Science Reviews
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Spaceship 1 sub-orbital manned spaceplane
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