Because the unloading time of vertical screw shipunloader is short it will have less impact from tide and lower cost of shipping .

由于垂直螺旋卸船机的 卸船时间短，所以受潮汐的影响少，航期 费少，有利于船舶运费的降低。

In the total costs of port enterprises loading and unloading costs account for a very large proportion . Therefore finding out existing problems through the analysis of loading and unloading costs and putting forward corresponding solutions is key to the port cost management .

在港口企业成本中，装卸成本占有较大比重，对 装卸成本进行分析，找出存在的问题，并提出控制措施，是港口 成本管理的关键所在。

The loading and unloading device has the advantages of simple structure low cost convenient operation and safe and reliable operating state .

本实用新型的承 卸载装置，结构简单， 成本低，操作方便，工作状态安全可靠。

Besides technology of loading and unloading one of the chief influencing factors that influence the efficiency and economic benefits to the port is crane . The cost of crane is 40 to 50 percent of total cost of handling machine .

对港口装卸效率的高低和经济效益的 好坏，除 装卸工艺外，影响最大的因素之一，就是装卸机械，装卸机械成本在 装卸 成本中达到40%～50%。

Belt conveyor is one of the most important bulk cargo transportation equipment . The main advantages of it are strong transportation ability ; large transmission range ; convenient of loading and unloading ; big safety factor ; long distance of transmission ; low cost of maintenance .

带式输送机是散装物料重要的运输设备之一，其优点主要有：输送能力强；输送范围广； 装卸方便；安全系数大；距离输送长；动力及维修 费用低等一系列优点。

This provides a magnificent prospect to self unloading cement carriers due to its ' low transportation cost large freight volume and low pollution .

因此，探讨一种运输 成本低、运量大、污染少的 自卸 式散装水泥运输方式是十分必要的。

Compared with the old unloading method for bucket it has many advantages such as lower cost simpler construction larger capacity and easier-made etc The whole process of unloading could be realized only by using gravity .

与以往箕斗的 卸载方式相比，具有 成本低、构造简单、容量大、制作容易等优点，仅靠重力即可实现卸载的全过程。

Pressure regulator of engine unloading valve Low Cost Sensor-less Control of PMSM for Air-conditioner Compressor Application

发动机 卸 荷阀调压器低 成本无位置传感器永磁电机在空调压缩机中的应用

During the analysis of data we discovered existent problems in machine use and its management and put forward some improvement advice in the production which will be instructive to improve loading and unloading efficiency lower cost and bring better benefit to the port enterprises .

在数据分析中，发现了设备使用和管理上存在的问题，并且在生产中提出了改善意见，对提高 装卸设备的生产效率，降低 成本，进而提高港口企业的效益具有一定的指导意义。

At the beginning of the paper we analyzed the relative indexes of single loading and unloading machines in the container terminal and made it clear the main content of single machine costing namely depreciation of machine each month operation cost and maintenance cost .

论文首先通过对集装箱码头 装卸设备单机成本相关指标进行分析，明确了单机成本核算的主要内容，包括设备月折旧费、运行 成本和维修成本。