查询词典 closed system

A closed-loop control system using Motorolas MEK6800D2 microcomputer for a quick-acting free-forging hydraulic press aggregate is described.

本文报道了采用MEK6800D2微型计算机的自由锻造液压机组的闭环控制系统，阐明了其总体方案、特点、接口设置以及多重中断处理的硬件电路，介绍了部分服务程序、锻造控制程序和专用监控程序的程序流程图以及为提高系统工作可靠性所采取的措施。

This thesis insists that farmer household should be re-cognition in such condition, which analyzes peasants in a developing and historical process. The thesis tries to prove that peasants are at the entrance of socialized small agricultural economy stage although the scale of farmer household' s management is still too small. It also points out that peasants are engulfing into an open mobile socialized system with division of labor, which is far-off closed traditional small agricultural economy.

本文基于家庭经营体制长期不变的条件，提出&重识农户&，即将农户放在历史变迁的过程中加以考察，认为，尽管当今的农户经营规模小，但他们已越来越深地进入或者被卷入到一个开放的、流动的、分工的社会化体系中来，与传统的封闭的小农经济形态渐行渐远，进入到社会化小农的阶段。

To solve the exsisting problems in the realization of the LFM/CW radar, the thesis presents a technique for dynamically measuring the LFM/CW signals, which can accomplish the dynamic measurements of FM linearity, FM bandwidth and FM slop of the transmitted signals of LFM/CW radars. This technique creates an effective and accurate means of judging the performance of LFMCW radars. The linearity-correction techniques presented in the thesis successfully make the linearity of the transmitted signals of an actual LFM/CW radar reduce from approximately 25% to 0. 1%(or r. m. s linearity of 0.04%), better than the best results (0.22%) obtained by foreign researchers with complex linearization closed-loop in the same kind of LFM/CW radars, according to the published literatures during the last decade. In order to improve the capability of the real-time processing and range-cells management of LFM/CW radars, the principle of equivalent mixing by lacking-sampling process of band-pass real signals is proposed based on the well-proved improvedversion of sampling theorem of band-pass real signals. This principle is used to configure the range-segments processing of the beat signals of an actual LFM/CW radar. The techniques of system-background interference suppression and the beat signal's dynamic range suppression are proposed, and are realized in an actual LFM/CW radar to demonstrate their effectiveness.

针对线性调频连续波雷达实现中急待解决的技术问题，文中提出并验证了线性调频连续波信号的综合动态测试技术，可以完成对线性调频连续波雷达发射信号的扫频线性度、扫频带宽和扫频斜率的综合动态测试，为衡量实际线性调频连续波雷达的系统性能创立了精确有效的测试手段；文中建立的非实时闭环动态校正技术使一部实际的线性调频连续波雷达的发射信号（时带积3×10〓）的扫频线性度从25%改善为0.1%（方均根线性度0.04%），优于国外已公布的80年代同类雷达中采用复杂的实时闭环动态校正环路所获得的实际结果（0.22%）；为了改善线性调频连续波雷达的实时性和分辨单元数处理能力，文中发展完善了实带通信号的采样定理并给予了严格证明，并在此基础上提出了欠采样等效混频原理，将其应用于实际线性调频连续波雷达的距离分段处理中；针对线性调频连续波雷达中系统背景干扰和回波动态范围问题，创立了系统背景综合抑制技术和频域动态范围压缩技术，并将它应用于实孔线性调频连续波雷达系统中，显示出它们的有效性。

As long as Apple maintains the iPhone as a closed platform, there is little hope of Apple fully implementing file access. However, a single well-guarded folder on the iPhone that has no access to any system components should be doable and would allow for use of an iPhone as an external hard drive.

这个是一个小小嘅期望和折中嘅办法让Apple可以实现文件系统嘅直接访问方法，比如设置一个与其他系统文件目录完全隔离嘅单一嘅目录，并且可以允许使用这个目录实现外置硬盘功能。

The result has been a number of Econolite innovations including development of the first digital controller, introduction of the first microprocessor based controller, the first wide spread application of closed loop arterial control systems, installation of the first NEMA TS2 Type 1 cabinet assembly, introduction of the first wide area video vehicle detection system using multiple camera inputs, and support of the NTCIP protocol.

到目前为止Econolite依然保持着交通控制行业的诸多第一，包括第一个发展数字控制技术，研发了微型处理为核心的控制器技术，第一个广泛推广应用动态闭环控制系统，第一个开始执行NEMA TS2标准，第一个采用符合NTCIP协议的多摄影机视频车辆检测系统。

Water system with a closed two-pipe program, cold water pumps three, three dual-use prepared; election three cooling water pump, a dual-use preparation.

水系统采用闭式双管同程式，冷水泵三台，两用三备，；冷却水泵选三台，两用一备。

The technique problems such as quick charging of high voltage capacitor, uniform discharge in high pressure large aperture zone, uniform flow of high pressure gas, and laser resonator, high energy pulse output and high repetition pulse output, were solved by applications of ultraviolet preionization, two-circuit series and parallel discharge structure of graphite Ernst electrode, folded resonator that embodies super-thin water-cooled non-deforming mirror, closed circle direct cooling system of double loop and high-voltage high-current switch power supply.

采用紫外预电离双路Ernst石墨电极串并联放电结构、超薄水冷不变形镜折叠腔、双回路直冷式封闭循环流动系统和高压大电流快脉冲开关电源等技术，解决了高功率高压电容充电、高气压大体积均匀辉光放电、高气压高速均匀流场、激光谐振腔和高脉冲能量、高重复频率脉冲激光输出等技术难题。

GOOSE message field of the main transmission of the tripping relay,switch,start,closed,allowing real-time signal,these signals correctly,quickly shows that the power system failure and abnormal working condition,is the main basis to protect the logical removal of a failure component.

GOOSE报文主要传输继电保护领域中的跳闸、合闸、启动、闭锁、允许等实时信号，这些信号能正确、快速地反映电力系统故障和异常工作状态，是保护逻辑切除故障元件的主要依据。

Furthermore, the article presents small-scale fishing ground indemnificatory allocation framework system. It advised that the marine and inland water fishing grounds which is connected with the land from the marine motor fishing vessels' bottom trawl closed area line, as the exclusive small-scale fishing's special zone for traditional fisher. Moreover let the small-scale special fishing zone being further divided and allocated, each zone establish small-scale fisher association to implement internal management and endow each zone of the attribute of usufructuary right which was the power of exclusive utilization, long effectiveness inheritable and transferable.

本文在对比分析了捕捞投入要素分配、渔获量分配和渔场分配三种分配方式的基础上，提出了小型渔业渔场保障性分配框架体系，建议将海洋机动渔船底拖网禁渔区线向陆地一侧的海洋和内陆水域渔场作为小型渔业传统渔民的专用渔场，再将小型渔业专用渔场在行政区之间进一步划分和分配，每个渔场建立相应的小型渔业渔民协会进行渔场使用的内部管理，并赋予小型渔业渔场使用权排他性的、长效性可继承的、可流转的用益物权属性。

In the left tool carriage ,the ball leadscrew,the servo motor and single gear reducer were displaced,and the coordinated movement about X and Z axis could been implemented by semi-closed loop control of SINUERRIK 802D numerical system.

介绍了在保留右刀架机械结构和操作功能不变的基础上对C5225立式车床的进给系统进行数控化改造。

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％。