drillship

The history and present status of ODP is described with the emphasis on the drillship and the high tech used, as well as the development trend of the ODP drilling technology in the next centur

在概述大洋钻探计划之由来与现状的基础上，重点阐述了大洋钻探中使用的钻探船及其高新技术，展望了新世纪大洋钻探技术的发展方向。

Problems existing in rock coal core fetch and appraisal in drilling and some suggestions;

钻探岩煤芯采取及鉴定中存在的问题及解决的几点建议

Some knowing about geotechnical engineering exploration drilling and logging;

对岩土工程勘察钻探及编录的认识