全面罩在蛙人水下作业、火场救援以及危险品生产等很多方面具有广泛用途。面罩佩戴者发出的语音与正常空气中的语音频谱结构不同,......

Stoichiometric and amorphous Er2O3 films were deposited on Si(001) substrates by radio frequency magnetron technique. Sp......

The use of living mulch in orchards is a widely accepted management strategy for improving soil quality and enhancing tr......

Proton exchange membrane fuel cell (PEMFC) stack temperature and cathode stoichiometric oxygen are very important contro......

化学是一门应用性极强的学科,在医疗、日化以及军事等领域中都得到了广泛的应用。而作为化学中的重要分支,化学计量学自然也是业界......