This article introduces in detail the work principle and site application case of single well metering automatic controler.The controler successfully solved the sigle well metering problems at Changqing oilfield up to...This article introduces in detail the work principle and site application case of single well metering automatic controler.The controler successfully solved the sigle well metering problems at Changqing oilfield up to 1994 more than 120 sets has spreaded in the oilfield.The merit of the controler is complete in function,high in reliability,simple repairing and low in cost.展开更多
η-quantum languages are discussed and some of their properties are derived. Furthermore the q-quantum language is defined. It is shown that L(A1A2)=L(A1)∩L(A2), L(A)=L(A1)∪L(A2). So over the same alphabet the inter...η-quantum languages are discussed and some of their properties are derived. Furthermore the q-quantum language is defined. It is shown that L(A1A2)=L(A1)∩L(A2), L(A)=L(A1)∪L(A2). So over the same alphabet the intersection and union of two different q-quantum languages are also q-quantum languages.展开更多
文摘This article introduces in detail the work principle and site application case of single well metering automatic controler.The controler successfully solved the sigle well metering problems at Changqing oilfield up to 1994 more than 120 sets has spreaded in the oilfield.The merit of the controler is complete in function,high in reliability,simple repairing and low in cost.
基金The National Science Foundation of China(No.10671030)
文摘η-quantum languages are discussed and some of their properties are derived. Furthermore the q-quantum language is defined. It is shown that L(A1A2)=L(A1)∩L(A2), L(A)=L(A1)∪L(A2). So over the same alphabet the intersection and union of two different q-quantum languages are also q-quantum languages.