Requirements: the pressure differential relief valve must operate to maintain the "zone" between the two check valves at least 2 PSI less than the supply pressure.
要求：压差安全阀必须具有将两个止回阀之间的“区域”压力维持在比供应压力低至少2 PSI的功能。
The scope of work would require the contractor to operate and maintain the existing enterprise intranet portal and design, install and maintain the future portal.
这项工作的范围将包括：承包商将运行并维护现有的企业内部网入口，并且设计、安装并维护未来的入口。
Critics of the technology say it involves too many moving parts, making it more complex and expensive to operate and maintain than competing technologies.
评论家说这种技术包含了太多的动部件，使得他的运行和维护很复杂。
The result is truly an appliance: simple to operate, easy to maintain, and better than just about anything else at what it does.
最终得到的设备易于操作、维护简单并且比任何其他同类设备都更优秀。
We are preparing what we call a transitional phase to help them be able to manage, operate and maintain the assets that is being left.
我们准备在过渡期帮助他们操作并维护遗留下来的资产。
The method is described on the PushToTest.com Web site and I maintain an open-source test automation tool called PushToTest TestMaker to automate and operate SOA tests.
在PushToTest.com网站有对PushToTest的描述并且我还维护了一个叫PushToTestTestMaker的开源自动化测试工具来自动化和操作SOA测试。
The choice becomes one of "Is it more efficient to maintain multiple copies of a document together with markup in an editor or to maintain multiple stylesheets that operate on the same data?"
我们将面临在两种选择之间进行抉择：是在一个编辑器中维护一个文档及其标记的多个副本效率高呢还是维护在同一数据上操作的多个样式表高效？
It produces any artifact needed to effectively learn, install, operate, use, and maintain the product.
它产生出所有需要有效地学习，安装，操作，使用和维护产品的工件。
Common best practices are provided that assist you in basic design for performance and in creating an RDBMS environment that are easy to operate and maintain.
本文还提供了一些常用的最佳实践，可以帮助您进行基础的性能设计以及创建易于操作和维护的RDBMS环境。
Large system images and associated hardware to operate and maintain them can contribute to large capital and operating expenses.
大型系统镜像以及用于操作和维护的相关硬件可能造成很高的资本和运营支出。
The report’s main focus is on small-scale on-farm improvements, structures that are easy to operate and maintain locally and that target mainly female and male smallholders.
报告主要关注于农田小规模改造，便于当地运作和维护的水利设施以及主体为女性的小农。
Assist other wood processing workers to operate, maintain and repair various machines and equipment and carry out other wood processing activities.
协助其他木材加工工人操作，维护和修理各种机器和设备，并开展其他木材加工活动。
Operate and maintain machines that press or blow molten glass in moulds to form or shape containers, such as bottles, jars and drinking glasses.
操作和维护按压或吹熔融玻璃模具的机器，形成或塑造容器，如瓶子，罐子和饮用水杯。
Operate and maintain finishing machines to grind, drill, sand, bevel, decorate, wash or polish glass or glass products.
操作和维护整理机，磨，钻，沙化，伞，装饰，清洗或抛光玻璃或玻璃制品。
Early computer systems were complex to operate and maintain, and required a special environment in which to operate.
早期的计算机系统是复杂的运营和维护，并需要建立一种特殊的环境中运作。
The direct extrusion press design is the most popular design because it is simple to produce, operate and maintain.
正向挤压机是普遍采用的设计，因为它易于生产加工、控制使用和维护保养。
Contract with their ISP (Internet Service Provider) or a specialized web hosting company to operate and maintain the B2C website.
合同，他们的ISP(互联网服务提供商)或一专门网页寄存公司运营和维护的B2C网站。
The objective is to correctly verify, store, maintain and operate the products supplied by the customers.
正确的验证、贮存、维护和使用顾客提供的产品。
YS series three-phase asynchronous motor has excellent starting and running performance and is simple in structure, easy to operate and maintain.
YS系列三相异步电动机有优良的启动和运行性能，结构简单，使用和维护方便；
Master how to operate and maintain the main equipment based on the project process and operation manuals.
能够根据工程进度和操作手册，熟练地操作并维护主要设备。
Installs equipment at customer packing sites and trains customer's employees to operate and maintain that equipment.
在客户包装厂安装设备，培训客户的操作员操作，维护设备。
It is simple in structure, convenient to operate, low cost, easy to maintain and suitable for experiment and teaching.
系统结构简单、使用方便、造价低廉、便于维护，适合于实验教学应用。
The lines are widely use, easy to operate and maintain which can be used in medicine, food and chemical industry.
本设备适应性广、操作简单、调整维护方便，能满足生产需要，广泛用于制药、食品、化工等行业。
This kind of architectural machine, with high efficiency and less cost, is easy to maintain and operate.
这种建筑机械，操作维修方便，而且效率高、费用。
In addition, this kind of hydraulic pumping unit will be simple and convenient to machine, operate and maintain, because the double-acting hydraulic cylinder will be replaced by a plunger cylinder.
此外，用柱塞缸取代双作用液压油缸，使这种液压抽油机具有加工简单、成本低、维护和使用方便等优点。
Each subassembly needs to be united and basify, which is easily assemble, operate and maintain; it all could save much time.
各组件均统一且简单化，则不论组装或操作，均可节省非常多的时间。
Electronics technology majors learn the basic skills needed to operate, maintain, install, and repair electrical and electronic equipment.
这个专业学习操作，维护，安装和修理电气及电子设备所需的基本技能。
The treatment of wastewater from small dye plant based on practical treatment process, and a new treatment process are thus put forward they are easy to operate and maintain.
结合实际治理工程，对小型染料厂工艺废水的治理进行了探讨，提出了一个操作简单、易于管理维护的处理工艺。
Solar power system for its stable and reliable, easy to install, operate and maintain simple, has been more and more widely used.
太阳能电力系统以其稳定可靠，安装方便，操作、维护简单等特点，已得到了越来越广泛的应用。
Solar power system for its stable and reliable, easy to install, operate and maintain simple, has been more and more widely used.
太阳能电力系统以其稳定可靠，安装方便，操作、维护简单等特点，已得到了越来越广泛的应用。
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