62 / | HD | REFRIGERATION |
132 | DF | AUTOMATIC CONTROL {19} |
141 | DF | .~ Of closed system sorbent type {2} |
142 | DF | .~.~ Discontinuous operation of refrigerant or sorbent container unit {1} |
143 | .~.~.~ Of intermittent generator-sorber unit {2} | |
144 | DF | .~.~.~.~> Plural unit sequence or alternation {1} |
146 | DF | .~.~.~.~> Of cooling fluid {1} |