查询词典 protective device

The invention relates to a flow on-line scale removal device of surface evaporative air cooler, especially an on-line scale removal device, belonging to the assistant device of surface evaporative air cooler.

表面蒸发式空冷器水流在线除垢装置，属于表面蒸发式空冷器的辅助装置，特别涉及一种在线除垢装置。

Steam box is made by stainless steel,it's includes steam jetting device and water jetting device, steam box we used the condensate spray mix device it can adjust spurt amount, causes the degree of the wetness of the fabric to be more uniform and stable to attain the maximum effect of pre-liminary shrinking.

喷蒸汽采用不锈钢制造，设有喷汽装置及喷泉水装置，咂蒸汽箱本厂采用汽水喷泉雾混合装置，可调整控制喷量，使布匹表面均匀湿润。

The configuration of actual UPFC device is consisted with the shunt-wound part and the series-wound part, this universal configuration determines that it has several functions in one device, such as STATCOM, SSSC, TCPS, and combines these functions in a device.

统一潮流控制器是灵活交流输电技术中最重要、最有应用价值的装置，可同时对电力系统的多个控制目标进行快速有效的控制。

4 An equipment-grounding conductor shall not be terminated on the luminaire by a screw, rivet, or equivalent device that is also used to secure another device or part that is removed during replacement of any electrical device or component.

24.4 设备的地线不应该用一个螺钉，铆钉或类似的紧固件，固定在用于保护其它装置或需要在使用期间被替换，移动的电器装置或组件上。

Imagine that we want to polish the rear ball bearing fitting: I put the ring onto device A, screw device B onto device A. Then carefully slide the total in the crankcase so the ring comes in the ball bearing fitting.

可想而知，我们希望波兰后方球轴承拟合：我把环上装置，螺杆装置b上装置甲，然后仔细幻灯片总在曲轴箱，使环来，在球轴承拟合。

A device loader loads and manages device drivers and enumerators for a given device.

设备加载器加载并管理某一设备的设备驱动器和枚举程序。

NiAl-Al2O3-TiC acted as transferring stress and supporting for protective layer. With increase of test temperature, decrease in strength and hardness of NiAl-Al2O3-TiC led to abscission and cracking of protective layer.

NiAl-Al2O3-TiC对保护层起到传递应力和支撑作用，随着试验温度的升高，NiAl-Al2O3-TiC强度和硬度的降低导致保护层的开裂和脱落。

With unique silicone protective film, it can clean glass, protect glass surface layer from acid mist and steam, meantime, prevent drip because of temperature difference, indeed make glass free of spot. The effect shall be better for auto glass, it can availably clean dirt, while taking effect as "lubricating protective film" to reduce friction between rain blows and glass, so protect their service life, leave your visual field brighter.

本品独特的硅酮保护成膜，不但能将玻璃洗干净，更起到保护玻璃表层，不会受到酸雾水气的腐蚀，更能起到防止因温差而出现雾珠，真正使玻璃"无彩无瑕"，如汽车玻璃用效果更佳，不但能有效地清洗玻璃上的尘埃污垢，更能起到以"润滑保护膜"的作用减轻雨刮与玻璃的摩擦力，从而保护两者的使用寿命，使您的视野更明亮。

A polarizing plate is provided and includes a polarizing film and two transparent protective film, at least one of the two transparent protective films being an optical compensation sheet, the optical compensation sheet being a cellulose acylate film having a thickness of from 40 m to 180 m.

本发明提供了一种偏振片，其包括偏振薄膜和两个透明保护薄膜，该两个透明保护薄膜中的至少一个是光学补偿片，该光学补偿片是厚度为40～180μm的纤维素酰化物薄膜。

Based on varying process of generator terminal parameters after excitation fault, shortages of excitation protective principle of static stability boundary and asynchronous impedance boundary are analyzed. It proposed that excitation fault research relates to large-disturbance stability. Because dynamic power-angle character of generator after excitation fault is non-sinusoidal, there are differences between dynamic power-angle character and static state power-angle character. So it isn't ideal to protective operation result based on small-disturbance stability and static stability boundary criterion. At the same time, it proposed that asynchronous boundary impedance criterion is a constant reactive power circle moving adown j Xd′. It can ensure complete loss-of-excitation generator measuring impedance enter into the circle, but can't ensure the other condition measuring impedance including impossible losing synchronism enter. So loss-of-excitation protection would be maloperation when system voltage drops short and recovers or generator rejects load.③Based on stability principle, it puts forward setting conditions and calculation method of generator loss-of-excitation protection by direct measuring power-angle.

以励磁故障后发电机端的相关参数的变化为基础，通过对以静稳定边界和异步阻抗边界作判据的两类三种现行励磁保护在原理上存在的缺陷分析，发现：励磁故障是一个大干扰稳定性问题，励磁故障后的发电机的动态功角特性与静态功角特性有很大的差异，已远非正弦曲线，因此基于小干扰稳定性原理、以静稳定边界作判据的保护必然动作不理想；异步边界阻抗判据是一个下移j Xd′的等无功阻抗圆，它可以保证完全失磁后的发电机测量阻抗能进入该阻抗圆，但不能保证完全失磁之外的其它状态不会进入该阻抗圆，因此在系统电压短时下降或发电机突然甩负荷等情况下可能启动该保护使之误动。

Aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales.

生活于水中或湿地的蕨类；从新生代生存至今；有时归于石松目之中。

The engine was uprated from a 90hp Franklin to a 125hp Lycoming.

改良过的引擎是从90hp到125hp莱康明富兰克林。