查询词典 null algebra

TYPE I ERROR is to reject the null hypothesis when it is true; TYPE II ERROR is to accept the null hypothesis when it is false.

比如最近在统计学课本上看到这么一段话：统计中有两类误差，分别称为一类误差和二类误差。

Consoli A%Musumeci S%Oriti G Active voltage balancement of series connected IGBTs null , 1995,null

陈志英%阮新波零电压开关PWM复合式全桥三电平变换器 10.3321/j.issn：0258-8013.2004.05.005 中国电机工程学报， 2004，05

Thirdly, the maximum-likelihood CFO estimation algorithms based on null-subcarrier are investigated, and it is shown that the maximum-likelihood CFO estimation algorithm based on equispaced null-subcarriers is equivalent to the CFO estimation algorithm utilizing the correlation of repeated training sequences.

进一步分析了在频率选择性衰落信道下，空载波和信道零点的数目与位置对基于空子载波的载波频偏估计算法可辨识性的影响。

Thirdly, the maximum-likelihood CFO estimation algorithms based on null-subcarrier are investigated, and it is shown that the maximum-likelihood CFO estimation algorithm based on equispaced null-subcarriers is equivalent to the CFO estimation algorithm utilizing the correlation of repeated training sequences.

提出了两种基于时域相关峰值检测的同步估计改进算法：1）采用一个OFDM符号做为训练序列，在接收端进行差分相关以解决时间度量函数中出现的平台效应。

JITENDRA KIKANL%OSWALDO A%PEDROSA JR Perturbation analysis of stress-sensitive reservoirs.[SPE 20053] null , 1991,null

廖新维%王小强%高旺来塔里木深层气藏渗透率应力敏感性研究 10.3321/j.issn：1000-0976.2004.06.028 天然气工业， 2004，06

WANG Shang-yi Calculation of longshore sediment transport rate null , 1995,null

窦国仁 潮汐水流中的悬沙运动及冲淤计算水利学报， 1963，4

In morpheme-based morphology, a null morpheme is a morpheme that is realized by a phonologically null affix (an empty string of phonological segments).

译文（不译，汉改高手是不懂的：在以词素为基础的字形学中，一个空白词素是由音韵学的空白词諁。

With a comprehensive study on the development of ellipsometer both at home and abroad as well as an analysis of the problems undermining HST-1 ellipsometer such as low effeciency in measuring, poor precision and ISA, this paper applies the master-sercice framework with USB interface into the designing of a precise reflectional null ellipsometer according to the principles by which the null ellipsometer works.

摘要本文综述了椭偏仪的国内外发展状况，分析了原来HST-1型椭偏仪存在的问题，如测量速度慢、精度不高和ISA接口等，根据消光式椭偏测量原理，采用了USB接口的主从机系统框架，设计了一台高精度反射式消光法椭圆偏振测厚仪样机，并对该仪器进行了大量的测试，测试数据表明该仪器测量精确度高且速度快。

System.out.println("a.length="+ a.length); System.out.println("b.length ="+ b.length);// The handles inside the array are // automatically initialized to null: for(int i = 0; i nbsp;b.length; i++) System.out.println; System.out.println("c.length ="+ c.length); System.out.println("d.length ="+ d.length); a = d; System.out.println("a.length ="+ a.length);// Java 1.1 initialization syntax: a = new Weeble { new Weeble, new Weeble }; System.out.println("a.length ="+ a.length);// Arrays of primitives: int e;// Null handle int f = new int[5]; int g = new int[4]; for(int i = 0; i nbsp;g.length; i++) g = i*i; int h ={ 11, 47, 93 };// Compile error: variable e not initialized://!

句柄。此时，编译器会禁止我们对这个句柄作任何实际操作，除非已正确地初始化了它。数组b被初始化成指向由Weeble句柄构成的一个数组，但那个数组里实际并未放置任何Weeble对象。然而，我们仍然可以查询那个数组的大小，因为b指向的是一个合法对象。这也为我们带来了一个难题：不可知道那个数组里实际包含了多少个元素，因为length只告诉我们可将多少元素置入那个数组。换言之，我们只知道数组对象的大小或容量，不知其实际容纳了多少个元素。尽管如此，由于数组对象在创建之初会自动初始化成null，所以可检查它是否为null，判断一个特定的数组&空位&是否容纳一个对象。类似地，由基本数据类型构成的数组会自动初始化成零、null或者false。

Struct audit_buffer *audit_log_startstruct audit_context *ctx, gfp_t gfp_mask,{ struct audit_buffer *ab = NULL;struct timespec t;unsigned int serial;int reserve;unsigned long timeout_start = jiffies;if (!audit_initializedreturn NULL

函数audit_filter_type将审计事件值与规则域的值比较，返回逻辑比较结果，即审计事件值符合规则域的定义，则表示不需要查看这个审计事件，返回值为1，否则为0。

A carrier gas such as nitrogen is directed through line 20 and valve 22 to connect with line 26 and mix with the gas sample.

如氮气之类的载体通过管线20和阀22引入，与管线26相通，与气体样品混合。

But for the most part, knaves and parasites had the command of his fortune

然而支配他的家产的大多是恶棍和寄生虫。