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An active vibration control of piezoelectric flexible adaptive truss structure in space was developed by the method of an improved integral plus double integral force feedback under measuring the displacement, using the mechanical-electro coupled theory o
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基于自适应结构的机电耦合理论，在测量位移的情况下，采用改进的二次积分力反馈控制方法研究了空间压电柔性自适应桁架结构的振动主动控制问题。 |
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An active vibration control system for the piezoelectric flexible adaptive truss structure was set up for real-time computer active vibration control experimental tests.
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建立了压电柔性自适应桁架结构主动控制实验系统，并对这类自适应结构进行了实时计算机振动主动控制实验研究。 |
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An active volcano may erupt at any time.
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活火山随时可能喷发。 |
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An active volcano may explode at any time.
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活火山随时都有可能爆发。 |
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An actively maintained collection of space physics links.
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英语资源按…检索的:物理学,空气与空间. |
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An activity in which students develop an evaluation checklist by reading four extracts from websites and developing prompts.
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在此项练习中，学生通过阅读从网上摘选的四篇文章来作一份评估单。 |
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An actor can not well play the role without life experience,no more can a dancer make a difference without much practice.
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一个没有生活经验的演员不会演出好的角色;没有充分练习的舞蹈者也不会有所不同(也一样). |
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An actor comes to the front, taps a microphone and asks if the audience is ready.
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剧始，一男子走至台前，拍了拍麦克风，问观众道：“准备好了吗？” |
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An actor defines a coherent set of roles that users of an entity can play when interacting with the entity.
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一个活动者定义了一种角色，一个实体的用户在和这个实体交互时可以扮演这种角色。 |
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An actor has to learn to laugh off bad reviews.
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演员须学会能对贬斥性评论一笑置之的本事。 |
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An actor have to learn to laugh off bad review.
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演员需学会能对贬斥性评论一笑置之的本事。 |
