The fire detection device detectiontube or the release tube tee joint outlet should be installed horizontally;
探火管式感温自启动灭火装置的探火管或释放管三通接头的分流出口应水平安装；
2
A new detectiontube for formaldehyde gas based on passive sampling has been developed according to the principle of the gas molecular diffusion and chemical adsorption.
新研制的甲醛被动式检气管是建立在气体分子扩散和化学吸收原理基础上的。
3
Detection: Gas sensor array. Researchers have developed a device that can analyze the volatile chemicals emanating from a tissue specimen tube to determine whether the sample is cancerous.