在这里你甚至可以清晰辨认出画面前方这个双胞胎胎儿手上的一根血管。

Here you can even make out a vein on the hand of the twin in the foreground.

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岩溶富水隧道施工中对隧道掌子面前方一定范围内的地质情况进行超前探测和预测预报是保证隧道施工安全的关键技术。

In tunnel construction of rich water karst area, the key technology to guarantee the tunnel construction security is to detect and forecast the geological situation in front of the tunnel face.

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高频地震反射波法能有效地进行隧道掌子面前方地质预报。

The result states clearly that the seismic reflection method of high frequency can effectively apply to geologic prefiguration in tunnel.

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