An app that does nothing but send a simple notification of “Yo” to recipients is the most popular app right now in the US. Created in just eight hours by Or Arbel， a 32-year-old app developer from Te
本文采用非线性系统的微分几何方法实现交流异步电动机的解耦控制和完全线性化,为交流传动系统提出了一种新的控制方法.
In this paper, the differential geometry of nonl
采用新鲜荔枝果汁对 2 3例可疑病例及对照组分别进行皮肤点刺试验和支气管激发试验 ,并测定激发试验前后FEV1 、PEF值的变化。皮肤点刺试验 :荔枝组均出现阳性反应 ,而对照组
When Beyoncé Knowles dropped her self-titled album without any warning back in December， 2013， I was amazed， like the rest of the world. Meanwhile， I was also curious to see how she’d outdo herself af
试验结果表明：在可口性试验中，野生型雄蝇的摄食行为积极活跃，经过体视显微镜下解剖检查消化道看到消化道明显红染、证明确实摄入硅橡胶浸出液，另外粪便也明显红染。毒性试验的结
对于山区的孩子们来说,再高兴不过的是在自己原先破旧的校园里,一座座新教室拔地而起.最近,两所“手拉手环保小学”分别在甘肃省的定西县西寨乡和甘南地区的迭部县旺藏乡落成
茶泡米汤是一种用锅巴煮制而成的韩国草本茶，这种韩国传统茶饮的历史可追溯到高丽王朝时期。人们用开水来冲泡锅底的锅巴。人们有时也会刻意地将米放入锅中干炒，直至把米粒炒焦
One of the greatest desires of people is for them to be able to feel contentment in their lives， fulfillment in their dreams， and joy in their families. Peace is what drives man to put himself in a st