1·There are many reverse impacts on environment around pipeline route caused by construction and operation of petroleum trunk line.
石油工业干线管道的建设和运营给沿线周围环境带来了诸多不利影响。
2·Depending on the experience of author, this paper discusses the setting principles and skills of trunk signaling and Interregnum Data and Route Data CC08 Digital SPC Exchanger used in Huawei.
本文结合作者工作实际，讨论了华为CC 08数字程控交换机中继信令、话路数据的设置原则及技巧。