It's a member of the International Telecommunication Satellite Consortium ( INTELSAT ) , transmitting commercial traffic between six continents.它是国际通信卫星组织的成员,在六大洲有商业通信往来.Licklider observed as the ARPAnet spanned two...
Dermatophagoides farinae is one of the main pathogenic mites causing human acariasis.粉尘螨是人体螨病的主要病原螨之一.The purpose of the study is to characterise 101 cases of pulmonary acariasis patients.本文总结了101例肺螨病患者的临床表现、胸部X线 特征及用甲硝达...
emigration from Europe to America从欧洲移居到美洲Emigration was still theoretically a matter of choice.从理论上讲，移民仍是个个人选择的问题。Increase in population made emigration necessary.人口的增加使向外移民成为必要。Due to poor family living Rishengchang Vot...