青云翻译

Expanded a short, wide cracks, then fill in the cracks of gravel, and finally the screen and the casing annulus packed gravel.

Expanded a short, wide cracks, then fill in the cracks of gravel, and finally the screen and the casing annulus packed gravel.

The inflation produces, the wide crack short, then fills up the broken stone in the crack, finally again in sieve tube and set of pipe ring spatial backfill broken stone.

Have a short, wide expansion cracks in the cracks, and then filled with gravel, and finally the sieve tubes and casing ring air filled with gravel.

Expanded a short, wide cracks, then fill in the cracks of gravel, and finally the screen and the casing annulus packed gravel.