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| competent bed | |||
| competent bed (refers to bed which maintains its thickness when subjected to stress even though it undergoes bending: as opposed to incompetent beds, which flow and thus become thicker and thinner at certain points) | |||
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| competent bed | |||
| competent bed (refers to bed which maintains its thickness when subjected to stress even though it undergoes bending: as opposed to incompetent beds, which flow and thus become thicker and thinner at certain points) | |||