大宛 meaning in Chinese

dayuan

Study on sand production mechanism and sand control technology in dawanqi oilfield
大宛齐油田疏松砂岩油藏出砂机理与防砂技术研究
Heavy as if biography " year : " it have it is the dark sun horse in order to , last heavenly steed name
史记大宛列传载： "得乌孙马好，名曰天马。
And heavy as if sweat blood horse , yi zhuang , rename there aren t horse sun not dark , name heavy as if horse say day ma yun "
及得大宛汗血马，益壮，更名乌孙马曰西极，名大宛马曰天马云" 。