密封用的空气

sealing in───封入

hearing aid───n.助听器

sealing off───封闭；脱焊

sealing up───密封（sealup的现在分词）

sealing wax───封蜡；[材]火漆

reading chair───阅读椅

sealing waxes───封蜡；[材]火漆

curling hair───卷发

dealing with───处理；对待

The invention relates to a vacuum packer, especially a vacuum chamber, working flat board and sealing air extraction device.───本发明涉及真空包装机，特别涉及一种真空包装机的真空工作室、工作平板及密封抽气装置。

All sootblowers shall be provided with a positive pressure, sealing air system to wall boxes and poppet valves. This air shall be obtained from the seal air fan system.───所有的吹灰器都应配有正压、密封空气系统至壁箱和圆盘阀。该处空气来自密封空气风机系统。

The rate of exchange between indoor and outdoor air, which depends on the construction of the house, the ventilation habits of the inhabitants, and the sealing of Windows.───室内外空气的交换速度，这取决于房屋的构造、居住者的通风习惯和窗户的密封程度。

Check that the sealing air is working properly and that there are no leaks───检查空气密封装置工作状态，无漏气。

ARRANGEMENT DRAWINGS OF SEALING AIR DUCT───密封风道布置图