Sometimes, dry ice particles or liquid propane are used.
有时，使用干冰颗粒或液态丙烷。
Liquid propane
原声例句
VOA Special 2013年1月合集
英语百科
Propane
![Pyrometry of a propane flame using thin-filament velocimetry. The hottest parts of the flame are in a hollow cone-shaped area near its base and pointing upward.
>1,750 K (1,480 °C)
1,700 K (1,430 °C)
1,600 K (1,330 °C)
1,350 K (1,080 °C)
1,100 K (830 °C)
875 K (602 °C)
750 K (477 °C)](/Images/godic/202501/24/Propane_flame_contours-en.svg3716.png")
![A 20 lb (9.1 kg) steel propane cylinder. This cylinder is fitted with an overfill prevention device (OPD) valve, as evidenced by the trilobular handwheel.](/Images/godic/202501/24/Propane_tank_20lb3716.jpg")
![Domestic spherical steel pressure vessel with pressure regulator for propane storage in the United States. This example was installed on this property in 1974.](/Images/godic/202501/24/150_gallon_Propane_Tank3716.jpg")
![A local delivery truck, behind the pickup truck](/Images/godic/202501/24/Propane_delivery_truck3717.jpg")
Propane (/ˈproʊpeɪn/) is a three-carbon alkane with the molecular formula C
3H
8, a gas, at standard temperature and pressure, but compressible to a transportable liquid. A by-product of natural gas processing and petroleum refining, it is commonly used as a fuel for engines, oxy-gas torches, portable stoves, and residential central heating. Propane is one of a group of liquefied petroleum gases (LP gases). The others include butane, propylene, butadiene, butylene, isobutylene and mixtures thereof.