参考系统

Explained through an example of reconstruction design,the features,the components,its working principle and realization method of the electric controlling system in a DC transmission skip elevator have been introduced.

通过一个改造设计实例，介绍直流传动箕斗提升机电控系统的特点、组成、工作原理及其实现方法，对矿山自动化水平的提高有一定参考价值

Because a large part of the special steel smelting process, on-site operations, pending his long and wide distribution of demand characteristics, the company through information-based means of different models according to each line into a fixed determination of single-trip fuel consumption, initialization input systems, through the dispatch sent a car arranged by the lines and the number of parameters such as operating times entry, automatic calculation of income in the calculation of reference fuel consumption, while dynamic.

上海运输公司由于大型钢铁企业冶炼工艺环节特殊、现场作业多、等待长、分布广等需求特点，公司通过信息化手段按各线路投入车型不同测定单趟油耗定额，初始化输入系统，通过调度派车所安排的线路及运行趟数等参数的录入，在自动计算收入的同时动态计算参考油耗。

Under spraying humidification state, the parameters of JYPW-1 spraying axial fans for textile enterprises such as flow, total pressure, efficiency, shaft power and acoustic power level changing with water-air ratio were tested, and the performance parameter curve changing with water-air ratio was obtained. The approximate formula of its pneumatic performance in different water-air ratio condition were deduced which can be referenced for of selection and project application.

在喷雾加湿工况下，对纺织空调系统所用的JYPW-1型喷雾轴流通风机的流量、全压、全压效率、轴功率和比A声级噪声等性能参数随喷淋水气比的变化进行了测试，得到了喷雾风机性能参数随水气比变化的曲线，并整理出喷雾风机在不同水气比时，其气动性能的近似计算公式，可供喷雾风机选型和工程应用时参考。

SO, the adaptive control hydraulic servo systems have been developed in order to meet the needs of better performance.

本文较详细地介绍了液压伺服模型参考自适应控制系统的结构、数学描述及特点。

Three regional climate models (MM4,RegCM2 and P-σ incorporated coordinate model)have been used to simulate the regional climate over eastern China in July .It is found that these three models have different performances in simulating different climate elements such as 500 hPa geopotential high field ,temperature fields,sea level pressure and rainy belt location.The results are important for developing regional climate model system which is suitable for eastern China and improving the simulation and forecast results.

利用MM4中尺度数值模式、RegCM2模式和P-σ混合坐标五层区域气候模式，以GFDL多年平均的6月份气候场作初始场，对我国东部地区7月份的区域气候进行数值模拟，比较、检验了三个模式模拟中国东部区域气候的性能，发现对500 hPa高度场、温度场、海平面气压场、雨带位置等不同的模拟对象，三个模式各有优劣，其结果对于发展适合我国东部地区的区域气候模式系统、改进模拟和预测效果具有一定的参考意义。

Are due to the practical limits to which correction can be made for systematic effects, such as offset of a measuring instrument, drift in its characteristics between calibrations, personal bias in reading an analogue scale or the uncertainty of the value of a reference standard.

其它非理想性因素是由于对系统效应的修正产生的实际限制，比如测量仪器的误差，两次校验之间的性质偏移，个人读取量数的偏差或者参考标准值的不确定性。

Other imperfections are due to the practical limits to which correction can be made for systematic effects, such as offset of a measuring instrument, drift in its characteristics between calibrations, personal bias in reading an analogue scale or the uncertainty of the value of a reference standard.

其它非理想性因素是由于对系统效应的修正产生的实际限制，比如测量仪器的误差，两次校验之间的性质偏移，个人读取量数的偏差或者参考标准值的不确定性。

This is a very good development examples, book sales system, suitable for the development of friend reference.

详细说明：这是一个很好的开发实例，图书销售系统，适合于开发的朋友参考。

On the basis of the relevant documents and information , this paper make a further exploration and study to the allocation of grinding system with roller press from two aspects.

在参考了有关文献资料的基础上，本文从两个方面对辊压机粉磨系统配置进行了进一步的探讨和研究，提出了具体的优化节能方案。

Through analysis of the hydraulic shock produced in the course of reversing of the reversing valve used in the cylinder pump circuit pump, the paper shows that this hydraulic shock in the return oil pipe in the hydraulic cylinder is the result from the mutual effect due to the oil inertial force and the loading inertia force.

通过对泵—缸式液压回路在换向阀换向时产生的液压冲击的分析，表明液压缸回油管路中的液压冲击是由油液的惯性力和负载的惯性力共同作用的结果，在此基础上提出了液压缸回油管路中液压冲击的增压压力计算公式，结果可为液压系统和管路的防振减噪设计提供参考。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。