① Idanwo fifẹ: wiwọn wahala ati abuku, pinnu agbara (YS, TS) ati atọka ṣiṣu (A, Z) ti ohun elo gigun ati apakan paipu apẹrẹ transverse, arc, apẹrẹ ipin (¢10,¢12.5) Iwọn ila-kekere tinrin Awọn paipu irin olodi, awọn paipu irin olodi-iwọn ila opin nla, ati ...
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