technological protective measure
反规避科技保护措施 Anti-circumvention of technological protection measures
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方法单人以显微外科技术，缝合血管应用一线环形缝合首尾打结法、为保护供心采用两步法切断升主动脉和肺动脉及妥善的心脏移植物保护措施。
Methods on the base of microsurgery technique, one-thread round suturing way was used for the vessel sutures, and the aorta and the lung artery were dissected separately.
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