maintain a steady position on the ocean’s surface和drill in very deep waters,extracting samples of sediments and rock from the ocean floor并列.
first developed for the offshore oil and gas industry,the DSDP’s drill ship,the Glomar Challenger是定语,修饰techniques
整句翻译：
对于最初应用于近海石油和天然气工业方面的技术的使用,深海钻探计划（DSDP）的钻井船,葛罗马·挑战者号能够在海面上维持稳定的位置,并钻进很深的水下,从海底提取出的暗礁和沉积物的样品来.