查询词典 protective device

Moreover, second-winding current waveform of a current transformer is calculated under the transient current of the typical short-circuit fault by numerical method. The analysis shows that the relevant protection equipment may refuse to trip when the fault current is extra high. It will result in the maloperation of protective relays for loss of their selectivity, and cause other protective relays to operate beyond range, and extend the scope of shutdown of power supply.

在这些回路出口处发生相间直接短路等严重故障时，流过相应TA一次侧的故障电流可能达到TA额定工作电流的100倍以上，大大超过了保护用TA的10%误差容许倍数，将使TA严重饱和，从而影响相关的保护设备的动作性能，因此有必要对在这种特大电流作用下的TA的传变特性做一些探讨，以分析其对继电保护装置动作特性的影响及应采取的措施。

Fire-retardant protective clothing: forces, petroleum, chemical, metallurgical and forestry industries such as special protective clothing.

阻燃防护服：部队，石油，化工，冶金和林业等行业的特种防护服。

The gray system theory is introducted for the study of failure of protective coating of bridge, and a gray model GM （1, 1） of coatings corrosion area variantion with time is built, a generic predict formula of protective coating life of bridge is put forward based on this theory.

将灰色理论引入到桥梁防腐蚀涂层的失效研究中，建立了涂层腐蚀坑剥落的面积随时间变化的GM（1，1）模型，并在此基础上推导出桥梁防腐蚀涂层寿命的一般预测公式。

Author has introduced the corrosion causes of various kinds of gas tank ,the concrete requirements of protective materials and protective construction design,discussion was made for protection construction procedures of various kinds of gas tank ,the application practive indicates that the protection structure of coal gas tank ,forming surficial/middle/bottom layers is the ideal protection design.

介绍了各类气柜的腐蚀原因；提出了防护材料和防护结构设计的具体要求；论述了不同类型气柜的防护施工程序。

Article 29 Whereas the selling prices of grain and other major farm produce are too low on the market, the government shall introduce protective prices and adopt corresponding measures to ensure the protective prices be put into effect.

第二十九条政府在粮食等重要农产品的市场购买价格过低时，可以在收购中实行保护价格，并采取相应的经济措施保证其实现。

Objective To study the protective effects of imipramine on glutamate-induced neurotoxicity in cultured rat cerebral cortical neurons.Methods Cortical neurons of fetal of rat were cultured in vitro.The protective effects of Imi on glutamate-induced neurotoxicity were obserced.

目的 研究米帕明对谷氨酸损伤培养鼠皮层神经细胞的保护作用方法分离培养15～18 d胎龄的大鼠神经细胞，加入谷氨酸，观察谷氨酸对神经细胞的损伤作用及米帕明的保护作用。

First head out from inside the printer: to remove the small ink sac or cartridges will print the first line above the data to remove protective cover protective cover 2 have a lock with a nail lightly covered Alice will be able to protect removed.

先将喷头从打印机里面拉出来：取下小墨囊或墨盒，将打印头上面数据线上的保护盖取下（保护盖两头各有一个锁扣，用指甲轻轻一翘就能将保护盖取下。

The oxygen index was higher in the lung protect group than that of in the control group at 0, 6, 12 and 24 h after CPB (P.05). In both groups, compared with the baseline values, plasma levels of MDA, IL-6 and TNF-α were gradually increased after CPB. Compared to the control group, the level of MDA, IL-6 and TNF-α were lower in the protective group at different time point after CPB (P.01). Histologic analyses showed intra-alveolar edema, capillary hyperemia and neutrophil accumulated in the control group, whereas no significant changes in the protective group.

结果 保护组各时点血氧指数均高于对照组(P.05)，CPB后血浆MDA、IL-6和TNF-α水平较术前升高(P.05)；在CPB后各时间点，肺保护组患者血浆IL-6、TNF-α和MDA均低于对照组(P.05)；对照组肺组织可见中性粒细胞浸润、肺间质水肿、肺泡壁小血管扩张、充血，保护组肺组织炎性反应较轻微。

Therefore, the protective enzymes in the soybean protective system was harmonized each other and synergized against the oxidization.

本试验表明，大豆体内保护系统所存在的酶类在抵御逆境胁迫中相互协调，协同抗氧化。

If the RCS-900 protection adopts the 2048kbit/s multiplex channel, slips may occur in the receiving code of the protective equipment while the retiming function of the channel is on and the communication clock of the protective equipment is set in the inner clock mode.

在RCS-900系列保护装置采用2048kbit/s复用通道的推广过程中，发现打开通道的输出再定时功能，并且将保护装置的通信时钟设置为内时钟方式时，保护装置接收信号会产生滑码。

Panorama Many people are dancing in a large sitting room.

在一个大客厅里，许多人在跳舞。

We fully understand how a microwave oven cooks food, it is first necessary to talk ...

我们充分理解一个微波炉煮的食物，这是首先要谈。。。