subterrene

1.The practice of subterrene drilling indicates that this method not only adapts to geothermal well, but also is a new pipeless reinforcement method to be applied widely.

热熔钻进实践证明，该方法不仅适用于地热钻井，而且也可以作为护壁方法推广应用。

2.(3)黏度要求：黏度般指黏结剂稠稀程度(热熔性黏结剂例外)。

(3) sticktness requirement： sticktness usually means a binder-subterrene condensend soditun degree (exceptions) of the binder.