One pupil complained in a composition that his father always left so much smoke in the living room that he couldn't do his homework there.
一个学生在一篇作文中抱怨说，他的父亲总是在客厅里留下很多烟雾，以致于他无法在那里做作业。
Composition and irradiation crosslinking products processing technology of low smoke, halogen free, flame retardant and low temperature heat shrinkable polyethylene were studied.
研究了低烟无卤阻燃低温收缩聚烯烃材料的配方及其产品辐射加工工艺。
Describes the composition and running modes of the smoke control and exhaust system, including the fire ventilation system at stations and in the tunnel, and the fire alarm and device control system.
简述了地下铁道防排烟系统的组成及其运行方式，包括车站及区间隧道火灾事故通风系统，火灾报警与设备监控系统。
The fireproof polyolefin composition has excellent fire retarding performance, safety performance and mechanical performance, and produces no toxic gas and less smoke during combustion.
采用本发明，燃烧时不会产生有毒气体，烟密度低，材料的阻燃性能、安全性能和力学性能优良。
In this paper, a new type of opacity smoke meter based on virtual instrument technique is developed with its composition and working principle presented.
基于虚拟仪器的先进技术，利用消光式烟度计的测量原理，研制出了一种新型的烟度计。
Traditionally, tobacco companies look at the chemical composition of tobacco and the smoke it produces when drawn through a "smoking machine" to assess its potential for harm.
传统上，烟草公司通过研究烟草和由“吸烟机”产生的烟雾的化学成份来评价香烟的潜在危害。
Traditionally, tobacco companies look at the chemical composition of tobacco and the smoke it produces when drawn through a "smoking machine" to assess its potential for harm.
传统上，烟草公司通过研究烟草和由“吸烟机”产生的烟雾的化学成份来评价香烟的潜在危害。
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