系统发生

This concept applies to firms that employ an accrual basis accounting system.

这一概念适用于采用权责发生制会计系统的企业。

a kind of design project of multifunction electric power quality gauged instrument based on virtual instrument is put forward in this article.this system integrates virtual instrument programming and power electronics together,to realize diverse signals of current electric power quality field allin one.the integrated signal generator unit which carries out the collection of high speed digital data,d/ a conversion and analog output in four channels,unsymmetrical synchro control fifo etc.by fpga are introduced,the flow of electric power system various signal which generates by vc programming is elaborated,and the structural design of signal amplification unit is analysed.the experiment text result shows that this gauged instrument has attained current advanced high grade of accuracy and it will accelerate the steps of electric power quality calibration because of its accuracy and versatility.

摘 要：提出一种基于虚拟仪器技术的多功能电能质量标定仪的设计方案，采用虚拟仪器编程技术和电力电子技术相结合实现集目前电能质量领域的多样信号于一体。介绍采用fpga实现高速数字量采集、d/a转换及4通道模拟量输出、非对称同步控制fifo等的集成信号发生单元，阐述利用vc编程实现的电力系统多样信号的产生流程，分析信号放大单元的结构设计。实验测试结果表明该标定仪达到目前先进的高精度等级，由于其准确性和多功能性将加快电能质量标定的步伐。

To achieve this end, anti-commercial bribery regulations by companies can play an important role, as exemplified by a famous labour dispute between DPC Co., Ltd. and its employee. Discussion on the primary content of anti-commercial bribery regulations by companies was carried out.

通过天津德普诊断产品有限公司与其员工因商业贿赂而发生的劳资纠纷案，说明公司制定内部的规章制度在反商业贿赂中的重要作用，并首次系统地提出公司反商业贿赂规章制度应包含的主要内容。

With good fire-resistance and stable chemical properties, phosphate ester is selected as the work medium. But its acid number is ...

磷酸酯以其优良的抗燃性能和良好的化学稳定性成为EH系统的工作介质，但其酸度易发生变化而引起抗燃油的老化。。。

What Happens When the Brain's Immune System is Activated?

发生什么事时，大脑的免疫系统被激活？

In order for any process to take place it is necessary for the system to pass through an active state.

为了使任何过程发生，就需要使该系统通过一个活化状态。

The results presented here provided an experimental system for further investigation of molecular events assciated with adventitious root initiation.

本结果为进一步研究不定根发生的分子机制建立了试验系统。

This method represents the virtual objects in Euclidean space instead of in affine space, which is consistent with the popular graphics rendering tools such as OpenGL and is more common in practice. A new classification based local and global tracking strategy to match features between the reference image and the currently frame directly is presented, which enables the augmented reality system working effectively even under large changes of viewing angles. A novel affine coordinate system definition method based on a collection of feature points is also proposed, which makes the tracking method effective even when not all the reference points are detected during the whole process, as long as there are at least four pairs of reference points correspondences.

该方法以仿射变换为桥梁来建立欧氏空间下的摄像机坐标系与世界坐标系之间的变换关系，它与OpenGL等当前流行的图形渲染工具一致，具有更强的通用性；采用基于分类的自然特征匹配策略，能够在视角和视点发生大幅度变化情况下依然正常工作；提出基于特征点集合的仿射坐标系定义方法，使增强现实系统在最小配置下只需4点追踪成功即可完成注册，比需要6点的透视投影方法具有更好的健壮性和精确性。

The development,structure and distribution of the secretory ducts are studied systematicly in primary structure of Ailanthus alitissima .

系统地研究了臭椿初生结构中分泌道的发生发育、结构及分布规律。

The average cost of a single hospital admission is now almost equivalent to China's annual income per head

这相当于给刚刚发生正面碰撞事故的汽车安装安全带、气囊和防抱死制动系统。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。