Aphids have many polarizations only in body color, such as the yellow, the green and the intermediate color etc in cotton Aphids.
仅体色蚜虫就有多种分化，如棉蚜有黄色型、绿色型和中间型之别。
A new high energetic bonder intermediate azidodeoxycellulose for solid propellant was synthesized from the raw material cotton linters under homogeneous conditions.
以棉纤维为原料，在均相反应状态下合成了一种新型推进剂用含能黏合剂—叠氮纤维素。
A new high energetic bonder intermediate azidodeoxycellulose for solid propellant was synthesized from the raw material cotton linters under homogeneous conditions.
以棉纤维为原料，在均相反应状态下合成了一种新型推进剂用含能黏合剂—叠氮纤维素。
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