无系统的

ABB's gearless mill drives (giant motor and drive systems that power ore-crushing mills) are more reliable and energy efficient than traditional mill drive systems, and increase mill productivity.

ABB的无齿轮传动研磨机（为矿石粉碎机提供动力的大型电机和驱动系统）比传统的研磨机驱动系统更可靠，更具有能源效率，而且提高研磨机的生产率。

The serious recording limitations due to the finite size of CCD and the space-bandwith products of an off-axis system and a lensless Fourier transform system are discussed.

分析了CCD参数对记录条件的限制、不同参考光的记录对CCD空间带宽的影响以及普通离轴全息系统与无透镜傅里叶变换全息系统中信息量的空间带宽积问题。

On the basis of introducing several normal methods of monitoring landslide,the article provides the automatically collecting system of a reservoir district landslide based on SMS wireless transmission. The power supply of this system is solar battery with dampproof and lightningproof measures. This system is characterized by cheap cost,high reliability,easy extension and maintenance.

在介绍常规滑坡监测方法的基础上，提出了基于SMS无线传输的水库滑坡自动化采集系统，该系统使用太阳能供电，采取了防潮、防雷击等措施，具有成本低廉、性能可靠、组网灵活、维护方便等特点；适合交通不便，无交流供电但有手机信号的偏僻地区进行远程非实时监测。

In the field we had the opportunity to test the Energy PT ceramic drag against Stripers when fishing lipless cranks in the California Delta.

正是因为Energy PT参与了这场比赛，我们才有机会对它的陶瓷制拉动系统进行测试，并且将其与Stripers进行一对一的比较。我们将两个系统都与无嘴鱼饵搭配使用，在加尼福尼亚三角洲开展了我们的测试活动。

Finally, we proof that the controller using the reduction method can stabilize a larger class of systems than those existing memoryless controllers under some cases.

最后证明系统在某些情况下使用还原法所设计的控制器与传统的无记忆控制器相比能够镇定更多的系统。

Pelobatidae is very importance in the phylogeny of anurans, but the phylogenetic relationships and taxology of this family (including subfamily, genus and subgenus )have yet produced long-time conflicting viewpoint among different researchers both domestic and abroad.

锄足蟾科在无尾两栖类的系统进化中处于极其重要的地位，长期来对该科各亚科、属、亚属的划分以及系统发育关系等问题，国内外学者尚存分歧意见。

In order to avoid the negative impacts from islanding operation, a novel islanding detection method based on Power Controlling is presented in this paper, The method continuously perturbs the reactive power supplied by dispersed generation systems while simultaneously monitoring the point of common coupling voltage and frequency.

为了避免分布式发电系统在孤岛情况下运行，本文提出了一种基于功率控制的孤岛检测方法，这种方法使分布发电系统提供不断变化的无功功率，同时检测公用连接点的电压和频率。

With rapid technological development of gearless permanent magnet synchronous, it is required that the weighting system is able to not only provide signals for under load and full load to prevent overload, but also present and feedback precise weight signal to transducer, which automatically adjusts starting torque of motor by weighting signal and starts elevator smoothly.

随着无齿轮永磁同步电梯技术的迅速发展，要求称重系统不仅提供轻载、满载信号、限制超载、更应能够给出准确的称重信号，将称重信号反馈给变频器，变频器根据称重信号，自动调整电机起动力矩，使电梯平稳起动，称重系统也由限制超载的辅助部件，转变成为实现电梯起动力矩补偿，防止起动侧溜的重要功能部件。

To detect the harmonic and reactive power current of four-phase transmission system, the current detection method for four-phase transmission system is presented based on FBD method, which is on the basis of improving the FBD method definitions.

为了检测四相输电系统中的谐波和无功电流，在进一步完善FBD法定义的基础上，提出了一种基于FBD法的四相输电系统电流检测方法。

This system is an important part of self-service operation of numerical cont rol machine tool s.

该系统是数控机床的无人化操作的一个重要组成部分，首先对摄像头输入的模拟信号进行数字化处理，然后送到DSP 系统，按新一代图像压缩标准H。

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％。