原理

School compiler theory courses at the operation, which contains an abstract syntax tree and source code.

学编译原理时的课程作业，里面包含抽象语法树和程序源代码。

It is very difficult to understand compiling algorithms because of their abstractness.

由于编译原理的算法比较抽象，要理解它们很难。

The matched abundance ratio cascade theory was used to design the cascades.

应用匹配丰度级联理论的基本原理，计算了不同关键相对分子质量下的级联，分析了级联参数的变化。

These tow training programs are both oriented for practical applications, and we deduce the academism theories and focus on key techniques. Thus it will not take too long time for the trainees to grasp the real skills.

两项培训课程均从实际应用为技术导向，净减学院派教条理论内容，以核心技术的原理为教学点，培训时间超短，让学员快速掌握真正实用的技能。

Two main impact factors on accuracy of electronic balance are discussed based on its working principle: acceleration of gravity and temperature variation.

从电子天平的工作原理出发，探讨了影响电子天平称量精度的2个主要因素：重力加速度和温度变化。

It works on the same principle of Download Accelerator.

它的工作原理相同的下载加速器。

The thesis first explains automatic gearshift principle ,and then designs the execution systems macro-design ,hardware, software and the CAN-bus communication, and achieves the intelligent control of clutch and accelerograph.

本文从客车自动换档的工作原理入手，对自动换档执行机构的总体方案、硬件、软件、CAN总线通讯协议都进行了设计，实现了电控气动的自动换档，同时对油门和离合器也实现了智能控制。

Based on law of non—statistics method, the quality rule for selection of antifreezing admixture in winter concreting was analysed, and the acceptance boundary line of concrete strength to select antifreezing admixture type in different weather conditions was also presented.

用非统计法原理分析了冬施中砼防冻剂选用的质量原则，并根据不同气温条件下，选用防冻剂品种，给出了控制冬期砼施工质量的防冻剂砼强度验收界限，供施工单位参考。

The working principle, hardware and software of Smart Card access module are also introduced.

通过读写器的工作原理、硬件组成及软件流程，进一步介绍了智能卡的应用系统组成和应用前景。

The safety and accident principle, basic proposition in safety subject, and the macro/micro reasons of accident were described and explained, followed with the definitions of the qualitative and quantitative analysis methods of a group of basic concepts in safety subject, such as danger, safety, accident, hidden peril, hazard, safety management, and risk assessment.

阐释了安全与事故原理、安全学科的基本命题及事故的宏观与微观成因，并给出了安全学科中的基本概念群，包括危险、安全、事故、隐患、危险源、风险评价、安全管理等定性及定量描述方法的定义。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。