作业说明

From this study, the following conclusion can be drawn: The ABM is an advisable method for modern logistics enterprises.

借此进一步说明建立以作业成本管理为核心的成本管理体系在物流企业的重要意义。

Through comparing with BaP content in coal smoke and traffic tunnels, it indicates that coking work is one of important sources of PAHs pollution.

通过与燃煤烟尘和交通隧道中BaP含量的比较，说明焦化作业是造成多环芳烃污染的重要污染源之一。

This is my recently completed a binary tree with Huffman encoding operation of the data structure operations.

详细说明：这是我近来完成的一个用哈夫曼树进行二进制编码操作的数据结构作业。

Researches show that the drive force characteristics of the electric tractor drive system based on series DC motor is close the ideal characteristics, the curves are concave, low speed with constant power, and high speed with constant torque; the electric tractor has large working speed under different shifts, but the extensive coincidence speed shows that the variable ratio of the gear is unreasonable; the maximum climbable gradient of this electric tractor is more than 30%, and does not need frequent shift when working for its extensive climbable gradient; there are many influence factors of continuous working time, which the more obvious factors are working speed and working load, the working time increases with the increase of the working speed and working load.2. Simulation researches on the drive characteristic of the electric tractor.

研究结果表明：基于串励直流电动机(来源：ABC21论文网www.abclunwen.com)的电动拖拉机电驱动系统的驱动力特性场接近理想驱动力特性场，其各挡下的驱动力特性是一组下凹的曲线，低速恒转矩，高速恒功率；同一行驶速度下所对应高挡驱动力大于低挡驱动力，这是由电机的调速特性决定的；电动拖拉机各个挡位下具有较广的稳定作业速度范围，但是各个挡位之间速度重合的范围较多，说明所用变速箱变速比与电动机匹配不合理；电动拖拉机最大爬坡度达到30%以上，并且各挡爬坡度变化范围较广，作业过程中不需要频繁换挡；影响电动拖拉机连续作业时间的因素较多，其中作业行驶速度和作业负荷影响最为明显，作业负荷越大，连续作业时间就越短，作业速度越快，连续作业时间就越短。2、电动拖拉机驱动特性仿真研究。

Set up in 1958 as part of the communization drive, the hukou - or residential registration system - has prevented rural residents from migrating freely to cities.

该校副校长说，孩子们给老师布置极端的作业，说明他们对平时过多的作业十分反感，以后要适当减轻孩子们的负担。

This is their operating procedures, can be used for small image feature extraction.

详细说明：这是自己的作业程序，可以用于小图像的特征提取。

Color on one of the course work, color gamut of each conversion, a simple interface is very easy to use.

详细说明：色彩学的一个课程作业，色域的相互转换，简单的界面非常好用。

This is a multi-media operations, is pretty good.

详细说明：这是多媒体作业，很不错。

You will read course syllabi and exam questions, assignment instructions and registration materials-and much more.

你会读到课程进度、考试题目、作业说明及注册指南等等。

The thesis analyzed limbing,bucking and cutting operation by using chain saw type G621AVS.The results show that difference of the EMG activities among trunk muscles were distinct(p＜0.01),while Oblique external abdominis amplitudes(p＜0.05).These facts indicated that different forestry work postures were the primary influence on EMG activities among trunk muscles.

在对使用矮把油锯打枝、造材和伐木动作进行分析发现，油锯作业时不同姿态下除左右腹外斜肌肌肉活动差异显著性水平在p＜0.05，其余各肌肉活动差异都存在显著性差异p＜0.01，说明不同的作业姿势对躯干各肌肉活动的影响存在显著性差异。

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。