延时技术 meaning in Chinese

off-line technique

Firstly , we reduced the influence of the phase difference of daily variation on the correlation caused by the disagreement of the longitude of the observatories by using delay technique , and found that the delay technique can extend the selecting range of the longitude of the reference observatories , which is considered one of the advantages the digital geomagnetic data of minutely value have
首先分析了延时技术消除台站经度不一致造成的日变化相位差异对相关运算的影响，发现延时技术可降低相位差异的干扰，拓展参考台在经度方面的选择范围，并认为这是分钟值数字地磁资料优势之一。