查询词典 double-entry system

Based on the present conditions in this field all over the world, this dissertation detailedly analysed the working process of the reversible direct current PWM controlled by double poles bridge, and illustrated the merits and shortcomings of the direct current PWM system.

本文针对国内外在这一领域的研究现状，详细分析了双极式控制的桥式可逆直流脉宽调速系统的工作过程，以及直流PWM系统的原理和优缺点。

The company has the international most advanced double-sided template modeling and automated conveyor system sand casting production lines.

公司拥有国际最先进的双面模板造型及砂型输送系统自动化铸造生产线。

A double-pass schlieren system using a combination of lenses and mirrors was designed for non-intrusive visualization and measurements of large-field flows such as internal waves.

为了实现对内波等流场的大视场无干扰竖向显示测量，设计了一种透镜和反射镜结合使用的平面反射双光程形式的纹影系统。

Independent directors system have double attributes of country power and company self-rule.

独立董事制度具有国家强制和公司自治范畴的双重属性。

The servo system of a photoelectric theodolite is usually a servomechanism composed of double loops of speed and position.

光电经纬仪伺服系统一般是位置、速度双闭的随动系统，其跟踪精度和动态响应能力是衡量系统性能的重要标志。

Human Simulating Intelligent Control are introduced as comparison with above approaches. Typical nonlinear system: simple inverted pendulum and double inverted pendulum are simulated. The characteristics and applying range of each algorithm are discussed and compared.

本文详细讨论了典型的非线性系统倒单摆、一级和二级倒立摆为控制对象的建模与控制，并以倒立摆为被控对象对上述每种算法的特点和适用范围分别作了讨论和比较。

Contraposed the problems in homegrown supercharge waterflood pumps,raised the design philosophy of fluid drive superseding traditional mechanical crank gear and designed a new style of double cylinder single-action hydraulic waterflood pump system under the precondition of satisfing water-injection technology requirements.

石油工业的发展对注水泵提出了更高的要求：一方面泵的压力越来越高，功率越来越大，而制造和维护成本要低，体积和质量也不能过大；另外由于石油工程用注水泵的工作条件十分恶劣，如何提高注水泵易损件的工作寿命，更好的满足需要是设计的关键。

In doing back-up data, we followed the work to be done is to switch to a system running DOS, and DOS command line in the implementation of "fdisk / mbr" command string to try to repair the hard disk of soft failure occurred ; if such a repair method to try is invalid, then we can go online to download and install the hard drive Bad Track professional testing tool to double-check the local hard disk in the phenomenon of the existence of Bad Track, Bad Track If you can not find the hard disk, it can not detect hard drive through the phenomenon is likely to be caused by the logic of failure, the logical solution is to find a Bad Track Repair Repair Tool to re-click the hard disk, only to do so.

在做好数据的备份工作后，我们接下来要做的工作就是将系统切换到DOS运行状态，并在DOS命令行中执行"fdisk /mbr"字符串命令，来尝试修复硬盘中发生的软故障；要是这种修复方法尝试无效的话，我们可以到网上下载安装一些专业的硬盘坏道检测工具，来仔细检查本地硬盘中是否存在坏道现象，如果找不到硬盘坏道的话，那硬盘检测无法通过的现象很可能是逻辑故障引起的，解决办法就是找逻辑坏道修复工具来重新修复一下硬盘，只能这样做了。

In doing back-up data, we followed the work to be done is to switch to a system running DOS, and DOS command line in the implementation of "fdisk / mbr" command string to try to repair the hard disk of soft failure occurred ; if such a repair method to try is invalid, then we can go online to download and install the hard drive Bad Track professional testing tool to double-check the local hard disk in the phenomenon of the existence of Bad Track, Bad Track If you can not find the hard disk, it can not detect hard drive through the phenomenon is likely to be caused by the logic of failure, when the only thing we can use the way is hard to find the logic of the corresponding brand Bad Track Repair Repair Tool to re-click the hard disk, I believe that case the hard disk will be able to detect the phenomenon can not be resolved the.

在做好数据的备份工作后，我们接下来要做的工作就是将系统切换到 DOS 运行状态，并在 DOS 命令行中执行" fdisk /mbr "字符串命令，来尝试修复硬盘中发生的软故障；要是这种修复方法尝试无效的话，我们可以到网上下载安装一些专业的硬盘坏道检测工具，来仔细检查本地硬盘中是否存在坏道现象，如果找不到硬盘坏道的话，那硬盘检测无法通过的现象很可能是逻辑故障引起的，此时我们唯一可以使用的办法就是找到对应品牌硬盘的逻辑坏道修复工具来重新修复一下硬盘，相信这么一来硬盘检测无法通过现象就能被解决了。

Different from the two-leaf-spring structure in the market right now, we applied one-leaf-spring as the suspension system. One design is the leaf spring of single cantilever beam and the other is the leaf spring of double cantilever beams.

有别於一般市面双弹片架构，本文使用单弹片作为悬吊系统，一款为单悬臂梁连结镜座；另一款为双悬臂梁连结镜座。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。