The paper discussed the application of tubestill preheater and double-pipe preheater in the process of removing silicon, and analyzed the situation of the scab.
本文就列管预热器和套管预热器在粗液脱硅过程中的应用进行了论述。并对其结疤状况进行了分析。
2
It's unknown whether the lava is residual material that's draining through the underground tube system or if the flow is still being supplied by lava from the crater, scientists say.
科学工作者们说，不知道熔岩是否是地下管道系统排出的残留物质，或者是否火山口的熔岩仍然在提供流量。
3
I made it on to the tube, still feeling horribly sick.