Nkag siab R - Tus nqi ntawm insulated iav qhia txog r - tus nqi yog ib lub ntsiab lus tseem ceeb zaus yog lub archeting thiab archulation thaum tham txog thermal rwb thaiv tsev. Nws sawv cev lub peev xwm ntawm ib daim lev
Mastering txoj kev kos duab ntawm kev tswj hwm ob chav ci iav Sliding Didingdouble, muab kev sib xyaw ua ke, kev txuag hluav taws xob, thiab kev ua haujlwm zoo. Lawv ua haujlwm ua kev sib xyaw ua ke