The construction of an SLBM test site with underwater communication and observation facilities and land-based missile tracking and telemetry facilities was finished in the early 1980s.

建立一个SLBM试验基地，水下通信和观察设备，陆基导弹跟踪和遥感勘测设备在1980年早期完成。

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"Land-based pollution sources" refers to the sites or facilities that discharge from the land into the sea pollutants which cause or may cause Marine environment pollution.

陆地污染源(简称陆源)，是指从陆地向海域排放污染物，造成或者可能造成海洋环境污染的场所、设施等。

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A range of associated facilities were completed by the late 1960s, including the land-based nuclear reactor in Mianyang, Sichuan Province;

多种的关联设备在1960年后期之前被完成，包括在四川省绵阳的陆基核反应炉；

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