מילוניםהפורוםפרטי הקשר

   אנגלית
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"A" frame
.קווי A-stolpe
 אנגלית אוצר מילים
A-frame ['eɪ'freɪm]
.נפט ו an A-shaped lifting device; the A-shaped, highest portion of a standard derrick on a drilling rig that is used to support the crown block; the stationary, A-shaped structure that supports and anchors in upright position the mast of a jackknife rig on a drilling rig