????????? ??????? ??????????? ??? ???? ?????????????? ????? ???????? ???????????????????????????????????????????????????????????????????????????????????????????????? ????????????????????????? ?????????????????????????????????????????? ????????????????????????????????????????????????????????????? ????????
ระบบบำบัดน้ำเสียมีประโยชน์อย่างไร
????????????????????????????????? ???????????????? (Wastewater Treatment Plant) ??????????????????????????????????????????????????????????????????????? ????????????????????????????????????? ????????????????????????? ???????? ??????????????????????????????????????????????????????????????????????????????????????????????????????? ???? ???
สักการะบูชาสิ่งศักดิ์สิทธิ์ด้วย ธูปหอมกวนอิม
???????????????????????????????????????? ?????? ??????????????????????????????????????????????????????? ??????? ? ????????? ????????????????????????????????????????? ?????????????????? ????????????????????????????????????????????????????????????? ??????????????????????????????????????????????????????????????? ??????????? ?????????????
แผ่นรีดเกลียวที่นิยมในปัจจุบันมีอะไรบ้าง ?
????????????? ????????????? ???? Flat dies ??????????????????????????????????????????????????????????????????????????????????????????????????????? 2 ???? ???????????????????????????????????? ????????????????????????? ????????????????????????????????????????? ?????????????????????????????? ??????1. ????????????