The ethylene cracking tubes pack-carburized in a laboratory(P tube) and carburized during servicing in a cracking furnace (S tube) are studied.
对实验室固体渗碳（P管）和裂解炉运行渗碳（S管）的乙烯裂解管进行了研究。
2
Pulverized coals were burnt in a laboratory-scale drop tube furnace to study the swelling characteristic of char particles and its influence on emission of particulate matter (PM) during combustion.
该文通过煤粉在沉降炉中的燃烧，研究燃烧过程中煤焦的膨胀特性及其对颗粒物形成的影响。
3
The experimental study has been done in a thermo-gravimetric analyzer(TG) and in a laboratory scale tubular furnace reactor, respectively.