Objective:To evaluate improved drainage method in pit operation.

目的：评价改良引流法用于肛肠术后的临床价值。

youdao

Between that operation and Thursday's excavation, the pit was completely sealed, out of fear that air or insects could damage the beams of the ancient boat.

在这个操作和周四的挖掘之间，地道被完全密封着，所以不用担心空气或者昆虫会对这些木材造成伤害。

youdao

The difficulties of the whole system design are the design of the pit judgment arithmetic, the writing of the HY6070 VXD, the design and operation about the database.

所以整个系统设计的难点在于：缺陷判定算法的设计；hy6070虚拟驱动程序的编写；数据库的设计和操作。

youdao

The big prize here is a 20% stake in the Fort Hills oil sands project, an open-pit mining operation targeting 3.4 billion barrels of bitumen.

FORBES: Total Drops $1 Billion In Oil Sands Grab

Timmins owns 100% of the open-pit heap leap operation.

FORBES: Timmins Sees Its San Francisco Mine Having 10 Year Mine Life -- CEO

The delays were caused by new Argentine import restrictions, which the company said has hindered its ability to purchase necessary spare parts in-country to keep all open-pit mining equipment in continuous operation.

FORBES: Pan American Silver Anticipates Navidad Study By Year-End; Encouraged By Argentine Politics