Last year, across the UK, only 51, 000 hectares were in "conversion" - the process farmers need to go through to have their land and practices certified as organic.
去年，在英国，只有51,000公顷在“转变”——农民们需要通过有机农场的审核。
This paper discusses several expressive methods of cubic forms in organic chemistry and then point outs the role of their conversion to each other.
论述了有机化学中立体构型的几种表示方法及各种构型表示的相互转换的规律。
The invention relates to a supermolecule type organic solar battery material and a preparation method thereof, and provides a new way for enhancing energy conversion efficiency.
超分子型有机太阳能电池材料及其制备方法为提高能量转换效率提供一种新的途径。
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