从而造成透气性差、密度与比重降低。
Further to this, permeability is worsened, and bulk density decreased.
本发明解决了现有防水隔热面料的透气性差，保温能力差的问题。
The invention solves the problems of poor ventilation performance and poor heat insulation capability of the existing waterproof heat insulation surface materials.
最重要的是，空气-空调环境提供了透气性差，有时甚至会产生一种奇怪的气味，它让你感到头晕恶心。
Most important, the air - conditioned environment provides poor ventilation, and sometimes may even give rise to a strange kind of smell, which makes you feel dizzy and sick.
最重要的是，空气-空调环境提供了透气性差，有时甚至可能引起的气味，这让你感到头晕，一种奇怪的病。
Most important, the air - conditioned environment provides poor ventilation, and sometimes may even give rise to a strange kind of smell, which makes you feel dizzy and sick.
用压差法测试塑料薄膜的透气性，是一个长期使用的主流测试方法。
One of the main methods to test the gas permeability is using partial pressure difference.
彩色蚕丝织物具有良好的透气性和吸放湿性，良好的紫外线吸收能力和抗菌能力，但抗皱能力差，强力较低，伸长率较大，容易黄变。
Color silk fabric is of good air permeability and wet absorption as well as good ultraviolet ray absorption and anti-bacterial property but poor anti-crease, weak strength and easy yellowed.
透气性测定通过恒压气源吹气测压法实现，透气性探头的核心部件是微压差传感器。
Permeability is measured by constant pressure air source blowing, core of the detector is micro differential pressure sensor.
本文讨论了织物透气性与压差的关系，对仪器的结构原理与流量标定作了介绍。
This article discusses the relationship between air permeability and pressure difference, and introduces the structure of the instrument, the calibration of rate of flow, and the experimental data.
受煤层瓦斯压力差和煤层的透气性双重因素影响，煤层是瓦斯后期释放的主要通道。
Being influenced by the dual factor of the coal seam gas pressure difference and ventilation, the coal seam is the main route at the later period of the gas release.
受煤层瓦斯压力差和煤层的透气性双重因素影响，煤层是瓦斯后期释放的主要通道。
Being influenced by the dual factor of the coal seam gas pressure difference and ventilation, the coal seam is the main route at the later period of the gas release.
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