查询词典 null class

The processes and the key techniques of the null coupler and acoustic transducers are described and analyzed in detail.

第三部分是光纤声光耦合器和光纤环形器构成的新型OADM 的实验研究。

Therefore,the application of space-time adaptive optimization method to active acoustic homing torpedo is studied, and the conventional method is improved by restraining the side lobe reverbereration and main lobe reverberation with self Doppler null method.

在此基础上研究了空时最优处理方法在主动声自导鱼雷中的应用，通过压低旁瓣减少旁瓣区混响和自身多普勒零陷抑制主瓣混响等措施对传统方法进行了改进。

Hanson L Breastfeeding provides passive and likely longlasting active immunity Annals of Allergy Asthma and Immunology , 1998,null

杨倩%练高建%黄国庆%陈杰半胱胺对鸡小肠粘膜中分泌型IgA细胞和上皮内淋巴细胞的影响南京农业大学学报， 2002，2

This value is characterized as the unique function that satisfies efficiency, complete symmetry, the quasi-null player property and additivity.

这种价值作为唯一的方程的特点是，满足有效性、完全对称性等特点。

If ARP is not used to perform local address resolution of IP_Add, NULL is returned.

但是如果目标IP地址不是路由器的地址，路由器可以转发回ARP请求通过接收的那个接口，到路由表中与链路层地址相符的ARP求助地址。

Lopez-Hoyos M%Ruiz de Alegria C%Blanco R Clinical utility of anti-CCP antibodies in the differential diagnosis of elderly-onset rheumatoid arthritis and polymyalgia rheumatica Rheumatology , 2004,null

魏锦%袁国华%黄慈波%周京国%唐中%蔚破%杨明辉老年类风湿关节炎患者43例临床分析中华老年医学杂志， 2004，01

If there isn't enough memory to satisfy your request, the pool allocator returns a NULL pointer.

如果没有足够的内存满足你的请求，池分配器返回一个 NULL指针。

The alternative hypothesis specifies what is true if the null hypothesis is not.

替代假设给出在零假设不成立时的真实情况。

Some methods on how to establish null hypothesis and alternative hypothesis are formulates with some examples.

然后结合实例来阐述建立原假设和备择假设的一些方法。

Whenever we reject the null hypothesis , the conclusion we do accept is called the alternative hypothesis

无论何时，拒绝无效假设时，我们所接受的结论叫做备择假设。

Now he worked in ajoint venture.

现在他在一家合资企业工作。

More troops in Afghanistan won't change any of the foregoing.

更多的在阿富汗的军队也不会改变之前的状况。