本文论述了地-空界面上天然宇宙中子流的来源；
The origins of natural neutron flux on the air-ground interface are described in this paper.
研究堆中水平辐照孔道用以从堆芯附近引出高能中子流。
Horizontal radiation ducts in research reactors are used to reduce the high energy neutron flux from near the core.
初步进行了宇宙中子流的测量，结果表明：在不同的气象条件下，宇宙中子流呈现有规律的变化。
Some preliminary works were done in measuring cosmic neutron current. The results show that cosmic neutron currents change regularly in different meteorological conditions.
初步进行了宇宙中子流的测量。结果表明，在不同的气象条件下，宇宙中子流呈现有规律的变化。
Monitoring of cosmic neutron current in Chengdu showed that intensity of cosmic neutron current changed regularly in different meteorological conditions.
初步进行了宇宙中子流的测量。结果表明，在不同的气象条件下，宇宙中子流呈现有规律的变化。
Monitoring of cosmic neutron current in Chengdu showed that intensity of cosmic neutron current changed regularly in different meteorological conditions.
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