Artemisia dracunculus the flower bud differentiation is carried out according to certain rules, temperature and light cycle by the double impact.
龙蒿的花芽分化是按照一定规律进行的，同时受到温度和光照周期的双重影响。
Technological advancement has a double impact on employment. The employment effects of technological progress in a certain period of time are not clear.
技术进步对就业具有双重影响，一定时期内技术进步的就业效应并不明确。
Technological advancement has a double impact on employment. The employment effects of technological progress in a certain period of time are not clear.
技术进步对就业具有双重影响，一定时期内技术进步的就业效应并不明确。
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