Two patent technologies about apparatus for pressure coring are introduced and some achievements of China in this field are enumerated. At last, some questions are brought forward.
介绍了美国和中国的两种保温保压取芯钻具的专利技术以及国内在此领域取得的一些成就，提出了一些设想。
Two patent technologies about apparatus for pressure coring are introduced and some achievements of China in this field are enumerated. At last, some questions are brought forward.
介绍了美国和中国的两种保温保压取芯钻具的专利技术以及国内在此领域取得的一些成就，提出了一些设想。
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