网络释义专业释义
R&D 研发 ; 研究与开发
R&D Manager 研发经理 ; 研发部经理 ; 有机合成研发主管
R&D CENTER 研发中心 ; 研发服务中心
R & D expenditure 研究开发
Independent R D 自主研发
quality r&d 以优质的研发
R&D Magazine 研发杂志 ; 研究与设计杂志
R&D supervisor 研发主管 ; 产品法规及研发主管 ; 研发项目主管 ; 研究发展部主管
R&D Director 研发总监 ; 研发总经理
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请询问出票人，请与出票人接洽[亦作r／d]
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请求断开 (request disconnect)断线要求 (request disconnect)
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接收资料 (received data)暂存器驱动 (register drive)报表描述 (report description)
·2,447,543篇论文数据，部分数据来源于NoteExpress
柯林斯英汉双解大词典
RD
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1.
ABBREVIATION for in New Zealand Rural Delivery (新西兰)农村邮递
双语例句原声例句权威例句
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Businesses need to train their workers better, and spend more on R & D.
各企业需要更好地培训其员工，并且在研发上有更多的投入。
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You could work for the R&D divisions of large chemical companies like DuPont or BASF.
你可以去杜邦或巴斯夫这样大型化工企业的研发部门工作。
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This concert hall was owned by an organization called the Daughters of the American Revolution, or D.A.R.
VOA: special.2009.01.25
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You can take a derivative of the derivative and you can get the acceleration vector, will be d^2r over dt^2, and you can also write it as dv over dt.
你可以对导数再求一次导,你就可以得到加速度矢量,也就是 d^2 r / dt^2,你也可以写成 dv / dt
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The most important result from last time was that if you took this r, and you took two derivatives of this to find the acceleration, d^2 r over dt^2, try to do this in your head.
上节课最重要的结论,就是如果你把 r 写成这样,对 r 求两次导就能得到加速度,d^2 r / dt^2,心算一下
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