1. Ipayipi elidala kanye nokukala kweseva kumapayipi.
2. Impahla yepayipi i-pyknotic futhi i-symmetrical, kanye nezinye izinto ezingalungile ze-acoustical conductivity;
3. Ubuso bodonga lwamapayipi bunokugcoba njengopende;
4. Isicelo akulona ipayipi lamanzi eligcwele;
5. Ingaphakathi lepayipi linamabhamuza omoya amaningi noma amaphesenti amakhulu okuqinile;
6. Ipayipi/ishubhu eqondile ayinde ngokwanele.
7. Indawo yokufaka imitha iseduze nendawo ekhuphukayo yepayipi elifake ivalvu;
8. Isiguquli noma ukuphazamiseka komsindo esizeni.
9. Isilinganiso esimaphakathi siwuhlobo lwengxube noma uketshezi oluthile olunomoya omubi ozwakalayo, njengendle eluhlaza, udaka, udaka, njll.
10. Uketshezi lwepayipi elibheke lapho ligeleza khona lisuka phezulu liye phansi noma lilufake njengendawo ephakeme yepayipi, okubangela ukuthi amanzi epayipi awagcwaliswe noma amabhamuza anqwabelene endaweni yokufaka.
Isikhathi sokuthumela: Jun-30-2022