欧洲支线涡浆飞机制造商ATR官方宣布，自年初以来，已获得145架飞机的确认订单，另有72架可选订单。
Officials for European regional turboprop maker ATR say 2011 has been a record year for sales, with 145 firm aircraft orders and an additional 72 options since the beginning of the year.
混凝土架构设计理论的实质，是通过架浆比、单位用水量以及砂灰比偏离三个参数推求单位水泥用量的过程。
The essence of concrete framework theory is to deduce the cement dosage of unit volume concrete from frame-mortar ratio, unit water dosage and deviated function of cement-sand ratio.
混凝土架构设计理论的实质，是通过架浆比、单位用水量以及砂灰比偏离三个参数推求单位水泥用量的过程。
The essence of concrete framework theory is to deduce the cement dosage of unit volume concrete from frame-mortar ratio, unit water dosage and deviated function of cement-sand ratio.
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