If it is not, though, direct examination of the ocean's water will have to be deferred to some far more ambitious landing-and-drilling effort decades hence.

The method and the step of reduction of river water, well water, reservoir water and interbasin water diversion are explained, The examination measures of reduction result rationality is put forward.

This paper discusses the examination principles of oil-water interface and its systemic structure in detail, and both the hardware and software design for the whole system.