Direct radiation is the main radiation below the canopy.
直接辐射是冠层下方的主要辐射方式。
To avoid direct radiation from neutrons, the CCD is coupled to the array by a mirror and lens optics.
CCD与光纤阵列之间采用反射镜和透镜耦合方式，使CCD避开中子源直接辐照。
The grid is composed from a wood pattern developed according to the sun path, avoiding direct radiation.
网格是根据太阳路径特制的木制模块，可以避免直射。
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