高频

It is presented in this paper that an analysis is done on maloperation of WXB-11 microprocessor based HF protection at transitional fault in Heilongjiang 220kV network in recent years.

文章对黑龙江省220kV电网近几年WXB-11型微机高频保护在系统发生转换性故障时发生误动进行了分析，说明了误动的原因，并提出了解决的方法。

If the high frequency signal of line protection could not pass through the channel or be normally transmitted, the protection might create failure to operate or maloperation, and it influences the safe and steady operation of the system.

当系统出现故障时，如果线路保护的高频信号不能通过通道正常传送，则有可能出现保护拒动和误动的现象，影响系统安全、稳定的运行。

Several mixed control samples of manganic manganous oxide, manganese dioxide and manganese sulfate with various sulfur content were prepared by adding sulfuric acid with known concentration into high pure manganic manganous oxide. Then they were dried and mixed, and the content of sulfur was determined by high frequency infrared ray carbon sulfur analyzer.

向高纯四氧化三锰中加入已知浓度的硫酸，制备不同含硫量的四氧化三锰、二氧化锰、硫酸锰的混合物控制样，将制备好的控制样干燥、混匀后，用高频红外碳硫分析仪分析控制样中的硫含量。

The calculation results show that the two injection ways are manipulable for new RF system in phase II project of Hefei storage ring.

计算表明：这两种模式对合肥储存环新高频系统都是可行的。

And it can be used to connect lower mechanicalnesw graphite,can be used to connect lower mechanicalness graphite,ceramics or glass pipeline,and as supply＆drain stuff pipe for tanker,store pot,vesssl or used to nalance pipeline displacement, dimension change or used to balancepipelinedisplacement,dimension change or eliminate high frequency mechanical vibration causeed by climate or other frequency mechanical vibration caused by climate or other reasons.

波纹软管通过特殊的加工方法，改变了以往管道不能弯曲的特性，它可用来连接机械较低的石墨、陶瓷或玻璃管道，可作槽车、贮藏、容器或反应釜的给、排料管，可进行管道错位连接或用来平衡因气候或其它原因引起的管道位移、尺寸变化或用来消除高频机械的振动。

Systematic investigations were performed of impact factors influencing the plant regeneration of Medicago sativa, in order to establish a regeneration system with high efficiency for genetic improvement.

通过系统地对紫花苜蓿体细胞胚发生以及次生胚发生途径中若干影响因子的比较研究，建立了紫花苜蓿高频体细胞胚和次生胚再生体系。

The high frequency plant regeneration system of Medicago truncatula with cotyledonary-node explants was developed through direct shoot organogenesis.

通过直接的芽器官发生途径，建立了蒺藜苜蓿Medicago truncatula子叶节外植体的高频植株再生体系。

Recordings from the STN exhibited an increase in the background activity and an irregular firing pattern, with a mean rate of (49±13) Hz. The mean cell density was (58±14) cells /mm, with an average length from upper bounder to lower bounder of (58±08) mm. The movementrelated cells were located primarily in the dorsolateral sector of the STN, with the leg area located medial along the mediolateral axis and centrally along the anteroposterior axis, compared with the arm area.

STN细胞电信号为高频、高幅及背景噪声较高的簇状放电，平均放电频率(49±13) Hz，平均细胞密度(58±14)个/mm，上、下界间平均长度(58±08) mm；运动相关细胞多位于背外侧部，下肢偏内侧，上肢偏外侧，亦可记录到&震颤同步细胞&。

METHODS: Three patients who reported metamorphopsia but showed no changes in the retina in conventional fundus photographs were examined. High-resolution retinal images were obtained with the AO fundus camera and by FD OCT. The images were compared with the findings obtained by standard clinical tests, including Amsler charts and fluorescein angiography.

对报告有视物变形但经传统眼底照相未发现视网膜变化的3例患者进行检查，使用自适应光学眼底照相和傅立叶域光学相干成像获得高频视网膜图像，将所获得的图像和标准临床检查结果对比，这些标准临床检查包括Amsler方格和荧光血管造影。

The dielectric relaxation process Ⅲ in higher frequency region, which is composed by the relaxation process based on the reorientation of adsorbed water molecules and relaxation process Ⅰbased on methylol groups, increases with the developing adsorption during moisture adsorption process.

在水分吸着过程中，出现在高频域的由基于吸着水回转取向运动的介电弛豫过程和基于无定形区中伯醇羟基回转取向运动的弛豫过程叠加而成的弛豫过程Ⅲ随着吸着的进行逐渐增大。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！