-
mechanical:assembly,
-
mechanical:object,
-
mechanical:system,
-
driving:mechanism,
-
intricate:mechanism,
-
mechanical:part,
-
mechanical:connection,
-
convenient:means,
-
complex:part,
-
internal:part,
-
moving:part,
-
larger:mechanism,
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passive:mechanism,
-
mechanical:drive,
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ancillary:equipment,
-
complex:object,
Category Nuances for gear_train:
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complex,
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internal,
-
mechanical,
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ancillary,
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passive,
-
moving,
-
convenient,
-
larger,
-
driving,
-
intricate,
Simple Categories for gear_train: