An international team of scientists say they've discovered a protected lunar "lava tube" - a deep, giant hole - that might be well suited for a moon colony or a lunar base, CNN reported Sunday.
据美国有线新闻网3日报道，一个国际科学小组宣布，他们在月球上发现了一个又大又深的垂直"熔岩洞"，可能适宜人类移民月球或修建月球基地。
Deep base-hole engineering is put number one among the new technologies practiced and used later by Constructive Department in 1998.
深基坑工程在1998年被建设部列为今后推广的十项新技术的第一项。
The text show the method to transact soft base under subgrade by mudjack, plane furnish, hole site, confirm pressure, deep of bore and technics flow of mudjack.
简要说明压浆法处治路基下软弱地基的方法，平面布置、孔径，确定压力、钻孔深度，以及压浆工艺流程。
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