A null-balance system is provided by balancing the magnetic forces by electrostatic forces. Sensorless control of direct-driven wind power PMSG

A Deliberation on-A Calibration System of Blackbody Based on Null Balance Comparison of Optical Radiation

《采用光学辐射零平衡比较法的黑体辐射源检定系统》一文商榷

Null Synthesis When Antenna Cells Have Different Amplitude and Phase Errors

天线单元存在幅相不一致性时的波束零点合成技术

I know. Well, I have to take it back. It's null and void.

我知道，我得收回我的话，那是无效的

Experiment results show that weighted null space method is an excellent face recognition method.

实验结果表明，加权零空间法是一种很好的人脸识别方法，它能在保留特征向量个数很少的情况下达到很高的识别率。

And then they put forward the Null Space Pursuit algorithm.

之后，他们又在该算法基础上提出了零空间追踪算法。

Set to null if it is not going to be used.

如果不用，可将其设为null。

A promise obtained by force is legally null.

一个以武力获得的契约在法律上是无效的。

The corresponding field in the business object is automatically set to null.

业务对象中的对应字段将自动设置为空。

Notice also that in case of error, the function returns NULL.

另请注意，函数在出错的情况下返回NULL。

Normal Form Theory of Relational Database under Fuzzy Null Value Circumstances

模糊空值环境下关系数据库的范式理论

A query processing method under null values environment in relational databases

空值环境下关系数据库查询处理方法

A spokeswoman said the agreement had been declared null and void

女发言人称该协议已宣布无效。

Null Steering Using Genetic Algorithms by Controlling Only the Current Phases

基于遗传算法的唯相位控制方向图零点生成

Comparison of Several Methods for Digital Beam Null Forming

几种数字波束零点形成方法的比较

Aleynikov told federal agents that he didn't intend to hand over Goldman's secret code to anyone.

阿列尼科夫对联邦特工表示,他不打算将高盛的秘密代码交给任何人.

What is Your Secret Code, NOKIA?

诺基亚,你成功的秘诀是什么?

Choose what the secret code is, and write down the number.

在下列句子中找出密码, 并写出序号.

Efficacy of Cypher~ ( TM) Stent in Patient with Coronary Heart Disease

Cypher~（TM）支架治疗冠心病的疗效观察

Early and short-term clinical evaluation of CYPHER drug-eluting coronary stenting

CYPHER药物涂层冠状动脉支架的临床应用

Public-private key combination is at the heart of public key infrastructure, and is based on asymmetric cypher.

公钥-私钥组合是公共密钥基础设施的核心，建立在非对称密码的基础上。