... 活动系数 activity coefficient; 活动向量 activity vector; 活动小车（头道粗纱机的） billy gate; ...
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activity level vector [计] 活动水平向量
·2,447,543篇论文数据，部分数据来源于NoteExpress
The Scottish Government said it was an isolated case and the virus was not circulating between susceptible animals as vector activity was low at this time of year and in the current temperatures.
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