连接完毕，必须双手紧握管材和管件，保持足够的冷却时间，冷却到一定程度后手方可松开，继续安装下一段管材。
Join, must both hands hold pipes and pipe fittings tight, keep enough cooling time, cool back hand can unclamp to certain extent, continue and install the next pipe.
大喉管经改进后构成一段内螺旋管件，有利于提高油的雾化质量。
The improved big throat pipe forms a section of internal spiral pipe component, which is favorable to improve the quality of the oil atomization.
应在所有管件处以及第12.2段中规定的一般跨距间隔处为托架、管槽及转角系统提供支撑。
Supports for tray, channel, and Angle systems shall be provided at all fittings and at the normal span intervals specified in paragraph 12.2.
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