So this thesis on the basis of traditional craft, utilizing respectively microwave and ultrasonic wave, improve and optimize the craft of traditional extraction.

为此本文在传统工艺的基础上，分别介入微波和超声波，对传统提取工艺进行了改进和优化。

youdao

Infrared image edge extraction is the important technique basis of image interpretation.

红外图像的边缘提取是其判读和识别的重要技术基础。

youdao

Proper combination of simple extraction and circulation extraction can increase yield and extract concentration simultaneously on the basis of assurance efficiency.

将简单提取和循环提取适当组合能够在保证效率的基础上使收率和提取液浓度有较大提高。

youdao

Meanwhile, Providence says its intention is to take the oil from Barryroe to Cork, but that it is a decision that will be made on a commercial basis closer to the time of extraction.

BBC: Ireland 'close to oil billions'

When the operation did get underway, then the President rejoined the group, and we were able to monitor in a real-time basis the progress of the operation from its commencement to its time on target to the extraction of the remains and to then the egress off of the target.

WHITEHOUSE: Press Briefing