查询词典 j

The least absolute deviation of the random censored data nonlinear regression model ［J］.

随机删失数据非线性回归模型的最小一乘估计［J］。

Infrared absorption spectrum analysis and its application to blood［J］.

血液的红外吸收光谱分析及应用研究［J］。

Standards and methods of evaluating high altitude acclimatization［J］.

高原习服的评价标准和方法探究［J］。

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。

Identification of Alpinia officinarum Hance and its adulterant base on matK gene sequence［J］.

徐凤霞。木兰族和含笑族和系统学关系——基于叶绿体matK基因序列分析［J］。

Based on＂The Data Bank System of the Standard Phonetic Features of Different Level in PSC＂, the thesis analyzes the variants of affricative versus fricative in syllables: z, c ,s - zh, ch, sh - j, q, x which are obscure in physiology; analyzes timbre phonetic variants aroused from the different match of seven main simple vowels and initials as well as the tonal patterns with the help of drawing the synthetic spectrograph and pitch spectrograph. So that the data can be offered to describe phonemes in 396 syllables in common use according to the acoustic analysis.

本文在"普通话水平测试各等级标准语言特征数据库系统"的支持下，通过制作396个常用音节语音样本的音高图和综合语图，考察在普通话教学和测试中从生理角度难以准确把握的一组仅有细微差异的塞擦音和擦音声母z、c、s-zh、ch、sh-j、q、x在音节拼合中的变体；考察7个主要单元音在与不同声母拼合构成的音节中音质上的变化模式；考察四个声调的变化形式，力图从语音声学物理特征角度的分析中为普通话常用音节音位语音规范度的描写提供客观的数据说明。

Finally, all of this shooting bodes well for penetrate-and-dish aficionado T.J.

最后，所有这些投手命中率的提高将会助长突破分球的迷恋者T.J。

The research on agile information system ［J］.

敏捷信息系统的研究［J］。

J. Allen Brack expresses," demon animal world " 3.1 edition Ao Duya basically is the carbon that presents ancient element, not many, agnate instrument and equipment assemble inside, have jug again, famous god 祇 is closed in the depth of Aoduya's, the player must cooperate with other player, the effort between beautiful take time is thorough Aoduya, think method to try to answer.

J。 Allen Brack 表示，《魔兽世界》3.1 版奥杜亚主要是呈现远古元素的副本，里面集合相当多、不同族的仪器与设备，又有监牢，有名神祇被关在奥杜亚的深处，玩家必须与其它玩家合作，花费时间努力深入奥杜亚、想办法加以应对。

We've agonized whether to tell you this, Norma, but one of your private videos made its way into Jimmy and P.J.

我们一直在犹豫是否应该告诉你。。。你们自己录制的录像带有一盘跑到 Jimmy 和 P.J。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。