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- Design and research of pyroelectric null detector[J]. 引用该论文 侯建伟;瑚琦;顾玲娟;李雯;王勇.
- The state or quality of being null. 无效无效的状况或性质
- The act of making null and void. 废除使 ... 作废和无效
- null detector 零值检波器,消尽指示器
- null detector circuit 零值检验电路
- phase null detector 零相检测器
- The contract was null and void because it was not signed. 这个合同无效，因为它尚未签字。
- pyroelectric null detector 热释电零值探测器
- The court ruled that the claim was null and void. 法庭裁决此项要求无效。
- The marriage was declared null and void. 婚姻已宣告无效了。
- The null subset corresponds to the term 1. 空集则对应于常数项1。
- A null reference pointer was passed to the stub. 向占位程序传送了空的索引指针。
- A marine detector is a hydrophone. 海洋检波器是水中地震检波器。
- Thermopile is usually a blackened thermal detector. 热堆一般是个涂黑了的热探测器。
- The agreement was declared null and void. 这个协议被宣布无效。
- The detector tube is filled with nitric oxide. 检测管中充满了氧化氮。
- Establish proper injector and detector temprature. 给进样口和检测器设定恰当的温度。
- 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 operator O is the null operator. 算符O是零算符。
- Please walk through the metal detector. 请走过金属检测器。
