| 976 / | HD | NUCLEAR TECHNOLOGY |
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| DIG 113 | DD | CONTROL OF NUCLEAR REACTION [G21C-7/00] {9} |
| DIG 117 |  | .~ By application of neutron-absorbing material (i.e., material with absorption cross section very much in excess of reflection cross section) [G21C-7/06] {3} |
| DIG 118 | DD | .~.~> By displacement of solid control elements (e.g., control rods) [G21C-7/08] {4} |
| DIG 130 | DD | .~.~> By displacement of a fluid or fluent neutron-absorbing material (e.g., by adding neutron absorbing material to the coolant) [G21C-7/22] |
| DIG 131 | DD | .~.~> Selection of substances for use as neutron-absorbing material [G21C-7/24] |