... 车辆停止线 Line limit 直管晋井,直管人孔 Line manhole 最佳含水量曲线 Line of optimum ...
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line manhole
行人孔
以上为机器翻译结果,长、整句建议使用 人工翻译 。
Initially, it established relationships with utility companies so it could, for instance, request that a power company seal a manhole that provides access to a key power line for a government agency.
WSJ: U.S. Program to Detect Cyber Attacks on Infrastructure
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