As a decorative material with strong practicality, carpets are widely used not only in commercial hotels, guesthouses, office buildings, entertainment venues, etc. At the same time, carpets have entered the homes of ordinary people. For the health of you and your family, experts recommend that the c-----

Nitrogen fertilization often causes excessive fertilization during the chestnut planting process. This can easily lead to excessive vegetative growth, leading to imbalances in vegetative growth and reproductive growth, reducing fertilizer use efficiency, and adversely affecting the ecolog-----

Research on the constant-speed control system of phase-locked loop of DC motor in the first year of the knives of the knives and knives. Sun Guofu, Gu Qitai, Liu Xuebin, Tsinghua University, abstract, proposed the working principle of DC motor constant speed control similar to frequency synthesizer-----

With the gradual increase in temperature, after undergoing an embarrassing and meticulous care, China's large-scale rubber forest ushered in the opening season of the new year, while China's rubber is also beginning to go out of the international rubber industry The "winter"-----

A coil on the ground, a coil on the chassis, two coils aligned, press the "charge" button, after a few hours, the electric car can eat and drink, and return to the road. This sounds like it is a bit like a fantasy? Researcher Wang Lifang from the Institute of Electrical Engineering of the-----

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In 2014, General Secretary Xi Jinping delivered an important speech at the Academician Conference of the two academicians, which profoundly expounded the important role of robotics science and technology industry innovation in contemporary science and technology and industrial transformation, and -----