在操作

The comprehensive value of the planted seedlings under forest in the designed scheme in Beijing were assessed by applying VE and VA methods. It was indicated that the value of the seedlings under ecological forests followed the order of Quercus variabilis, Broussonetia kazinoki, Cotinus coggygria, Acer truncatum etc. It was concluded that in the forestry management, comprehensive values should be considered to select seedling species with high values for regeneration under forests.

评价结果认为，在以生态公益林定位的森林经营中，人工林下更新幼苗的综合价值依次是栓皮栎、构树、黄栌、华北五角枫等，所以在林下层苗木的经营选择中应该按照这些树种的综合价值来进行苗木的选择和操作。

The comprehensive value of the planted seedlings under forest in the designed scheme in Beijing were assessed by applying VE and VA methods. It was indicated that the value of the seedlings under ecological forests followed the order of Quercus variabilis, Broussonetia kazinoki, Cotinus coggygria, Acer truncaturn etc. It was concluded that in the forestry management, comprehensive values should be considered to select seedling species with high values for regeneration under forests.

评价结果认为，在以生态公益林定位的森林经营中，人工林下更新幼苗的综合价值依次是栓皮栎、构树、黄栌、华北五角枫等，所以在林下层苗木的经营选择中应该按照这些树种的综合价值来进行苗木的选择和操作。

ABSTRACT:The present paper is mainly introduced GPS the basic principle, the system composition, the technical characteristic, the error source and the application method and the sequence of operation, and carry on a lofting, the curve lofting as well as using GPS in the project survey carry on the boundary point survey in the cadastration, carries on the precision analysis to the measurement result.

论文摘要：本论文主要介绍GPS的基本原理、系统组成、技术特点、误差来源和使用方法及操作步骤，并利用GPS在工程测量中进行点放样、曲线放样以及在地籍测量中进行界址点测量，对测量结果进行精度分析。

ABSTRACT摘要: The present paper is mainly introduced GPS the basic principle, the system composition, the technical characteristic, the error source and the application method and the sequence of operation, and carry on a lofting, the curve lofting as well as using GPS in the project survey carry on the boundary point survey in the cadastration, carries on the precision analysis to the measurement result.

论文摘要摘要：本论文主要介绍GPS的基本原理、系统组成、技术特征、误差来源和使用方法及操作步骤，并利用GPS在工程测量中进行点放样、曲线放样以及在地籍测量中进行界址点测量，对测量结果进行精度分析。

ABSTRACT: The present paper is mainly introduced GPS the basic principle, the system composition, the technical characteristic, the error source and the application method and the sequence of operation, and carry on a lofting, the curve lofting as well as using GPS in the project survey carry on the boundary point survey in the cadastration, carries on the precision analysis to the measurement result.

本论文主要介绍GPS的基本原理、系统组成、技术特点、误差来源和使用方法及操作步骤，并利用GPS在工程测量中进行点放样、曲线放样以及在地籍测量中进行界址点测量，对测量结果进行精度分析。

ZqD;Z.BUB0 abstract:the present paper is mainly introduced gps the basic principle, the system composition, the technical characteristic, the error source and the application method and the sequence of operation, and carry on a lofting, the curve lofting as well as using gps in the project survey carry on the boundary point survey in the cadastration, carries on the precision analysis to the measurement result.

论文摘要：本论文主要介绍gps的基本原理、系统组成、技术特点、误差来源和使用方法及操作步骤，并利用gps在工程测量中进行点放样、曲线放样以及在地籍测量中进行界址点测量，对测量结果进行精度分析。

Nay, when time and leisure are wanting to add ample theoretical explanations to an extensive casuistical drill, we should not criticize him who would under these circumstances insist on the latter at the expense of the former; it is the more necessary in actual practice.

不仅如此，当时间和休闲是要补充充足的理论解释，以广泛casuistical演练中，我们不应该批评他的人会在这种情况下，坚持对后者牺牲前者，它是更需要在实践中操作。

In traditional experimental spectrum meters, the measurements, analyses, display and controls of them were separated, and made the experiments complexly operating.

在现在的实验光谱仪器中，光谱的测量、分析、显示和仪器的控制往往是分离的，这样使得在实验时操作繁琐，可观性不强。

With respect to the analysis, the operation of spam combination system in practice design and construction steps was summarized by some concretive case study. Finally, the future development of spam combination was explored in perspective.

最后在以上的分析基础上，结合建筑实例，总结跨越式联结体系在实际操作过程中的各构成元素之间关系的具体处理，探究其发展倾向。

This work contributed essentially to optimal planning of refinery management. A strategy for solving the decision problem of short—term refinery planning is proposed, that is, to obtain the real time information of unit operations and environmental conditions by means of computer simulation, to dynamically configurate and modify the decision model depending on both simulation and expert reasoning, to make decision analysis and short—term production plan with the aid of expert simulation system. In this paper, a new approach cellad ESDSS was proposed by integrating DSS and expert simulation system . As a case study of ESDSS, a so called RESDSS was constructed, which is composed of seven subsystems, namely: data base subsystem, model base subsystem, method base subsystem, knowledge base subsystem, experiment base subsystem, human computer interaction subsystem, and expert simulation executing subsystem. The main results and contributions of this work are as follows:(1) A novel approach of DSS named ESDSS was proposed, which integrates DSS and ESS.

本文关于炼油生产专家仿真决策支持系统原型的研究从炼油企业优化生产管理的角度出发，以&利用仿真技术获取装置操作和环境条件的动态变化信息，依靠专家方法仿真实现决策模型的生成和修改，凭借专家仿真决策支持系统辅助高层领导者实施决策分析和制定短期生产计划&作为炼油生产短期计划决策问题的求解策略，在综合考虑决策支持系统（Decision Sup-port Systems，简称DSS）和专家仿真系统（Expert Simulation System，简称ESS）特点的同时把这两个系统结合在一起而提出&专家仿真决策支持系统（Ex-pert Simulation Decision Support System，简称ESDSS）&这一新的构思。

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％。