Where was dyna-drill first made?

代纳钻具首先是在哪儿造出来的？

youdao

At first,the steam-powered drill worked two times faster than he did.

VOA: special.2009.02.21

Soon after that, I got it in my head to drill my first well.

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Mr Wang raised capital from relatives and friends to drill that first well, which produced 60 barrels of crude a day.

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