this product comes with lifetime warranty. books do not last forever.

they feature open architecture format control and carry a lifetime warranty.

他们以开放结构的格式控制和终身保质为特点。

we wish all drives to carry a lifetime warranty and to be cap-less.

我们希望所有驱动器进行终身保修和帽。

he turns out a number one quality rod, for a very reasonable price that has a lifetime warranty.

他打开了多项质量一杆，一个非常合理的价格，具有终身保修。

this kind of relief valve is reliable in action, low in cost and free of maintenance, another advantage is that it has wide scope of application for it has not power device therefore it is not interfered, while working, by any intelligent instrument.

这种泄压阀动作可靠、价廉、免维修，由于无动力装置，工作时不受智能仪表干预，所以使用范围比较广泛。

in contrast, application based on b/ s model has the advantage of cross-platform, free client maintenance, etc, so more and more applications based on c/ s gradually migrate to the web platform.

相比之下，基于B/S模式的应用具有跨平台、免客户端维护等优点，因此越来越多的C/S应用逐渐迁移到web平台上来。

both pneumatic pulsed liquid jet pump and vortex diode pump are two new types of radioactive liquor transfer systems used in nuclear industry, where the prevention from leakage and free of maintenance are required.

气动式脉冲液体射流泵和涡流二极管泵是两种新型的核用放射性溶液输送装置。最后，我们还对脉冲液体射流泵和涡流二极管泵联用装置的性能进行了初步的实验研究。

high accuracy, erosion and wear resistance strong anti-tremor, free of maintenance, long service life no electric sparks, safe and trustiness, convenient installation.

精度高，耐腐蚀及磨损；抗震性强，免维护，使用寿命长；不起电火花，安全可靠，安装方便。

vibration characteristics of high speed railway's bridge-subgrade transition section segmental bridges when properly designed will prove to be practically free of maintenance for many years.

高速铁路路桥过渡段振动特性试验研究分段桥梁经过适当设计可以多年不需要养护。

the inserting pin with fixed structure which does not need oiling is pollution free and maintenance free.

插针采用固定构造，完全不用加油，无污染，无维护成本。

study on parametric drift behavior is much more important as reliability is developing toward failure free or maintenance free operating.

随着可靠性朝无故障寿命或无需维修工作周期的方向发展，对产品的参数漂移进行研究越来越显重要。

one year repair for free, maintenance for lifetime, the maintenance response time is four hours.

一年保修、终身维护。维护响应时间为四小时。

permanent magnet synchronous motors ( pmsm) are widely used in high-performance drives such as industrial robots and machine tools thanks to their known advantages as: high power density, high-torque/ inertia ratio, and free maintenance.

由于永磁电机具有高功率密度、高转矩惯性比和易于维护等特点，因此被广泛用于工业机器人和电动工具等高性能调速场合。

following the electric power industry's rapidly developing in our country, the demands of intelligence control functions to the vacuum circuit breakers are higher, such as: real-time switch, high reliability, free maintenance and so on.

随着我国电力工业的快速发展，配电网自动化对作为开关设备的真空断路器的智能控制功能提出了更高的要求，诸如要求分合实时、高可靠性和免维护等。

though a preliminary investment of vortex flow meter is a bit higher than orifice, its free maintenance, high precision, stable in operation and good performance make it possible to replace orifice in certain extent.

涡街流量计虽然一次性投资比孔板流量计稍高，但精度高、免维护、工作稳定，总体性能优于孔板流量计，在一定程度上用以取代孔板流量计是可能的，也是可行的。

the scroll wrap is the main movement part of compressor, only have the tooth, have no abrasion, thus the life is longer, so this is free maintenance compressor.

涡旋压缩机主要运动件涡盘只有啮合没有磨损，因而寿命更长，被誉为免维修压缩机。

the permanent magnetic actuator ( pma) is characteristic of few parts, free maintenance, high reliability and adaptability to the vacuum circuit breaker ( vcb).

永磁操动机构的零部件少、免维护、可靠性高，与真空断路器的特性配合良好。

the result shows that rocos is an excellent compact spinning device producing good quality yarn with small investment and free maintenance.

结果表明，ROCOS是一种投入少、免维护、纺纱质量好的紧密纺装置。

in the network function, the network structure was simplified, the daily maintenance work also was reduced, realizing the cell data free maintenance.

在网络功能方面，简化网络结构，减少日常维护工作的工作量，实现小区数据免维护。

the practice proves that this system can be effectively increase the level of free maintenance and operation reliability of dc adjusting speed control system.

实践证明，该系统能有效提高直流调速传动控制系统的运行可靠性及免维护水平。

the fan, air duct can keep clean, no grease, free maintenance, eliminating fire damage;

风机、排风管，能保持洁净，无油垢、免清洗，消除火灾隐患；