This article is mainly about the characteristic and principium of automatic suberization dense-phase pneumatic conveying technology,and the experimental study in materiel transportation of PTA.
主了自动成栓密相送技术的特及原理,应用于对苯二甲酸送的试验研究。
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The report of Kim's visit to a chemical materiel institute came after US Secretary of State Rex Tillerson appeared to make a peace overture to Pyongyang, welcoming what he called the restraint it had shown recently in terms of military actions.
美国务卿雷克斯·蒂勒森向平壤方面提出他所谓的在军事行动方面有所克制的和平提案后,就传来了金正恩访问化工材料研究所的报道。