Dilcher说：“二氧化碳在大气中的含量每增加万分之一就会对植物气孔的数量产生深远的影响，同时还会使气孔的宽度变窄。”
"The increase in carbon dioxide by about 100 parts per million has had a profound effect on the number of stomata and, to a lesser extent, the size of the stomata, " Dilcher said.
相反，当大气二氧化碳浓度低时，气孔密度似乎增加了——就像长出更多的嘴来呼吸。
Conversely, when atmospheric carbon dioxide is low, stomatal density tends to increase - it's like getting more mouths to breathe with.
气孔是二氧化碳进入而氧气和水蒸气逸出的开口。
A stoma is an opening through which carbon dioxide goes in and oxygen and water vapor escape.
二氧化碳通过小孔或者叶片表面的气孔进入植物当中。
The carbon dioxide enters the plants through tiny holes or pores on the surface of leaves.
分析钛材管道焊接产生的冷裂纹、气孔、氧化等缺陷的原因和形成机理，提出焊接工艺措施，以确保焊接的质量。
And analyzes the reason and forming mechanism of the defects such as cold crack, air porosity and oxidation etc. proposes the measures of welding process to ensure the welding quality.
另外，二氧化碳描记还会提供通气孔开放性、技术错误和非循环系统中气流充分的信息。
Additionally, capnography will provide information about airway patency, technical faults and adequacy of gas flow in non-rebreathing systems.
讨论了气孔率、体积密度和常温耐压强度与电熔氧化镁加入量之间的关系。
The porosity, bulk density and cold crushing strength of the refractory samples were determined.
火焰喷涂具有设备简单、使用方便、操作成本低的特点，但它的涂层结合强度低，气孔率及氧化物含量高。
Flame spray possesses the characteristics of simple equipment, easy of use and low operating cost, but the coating adhesive strength is low, and porosity and oxidation is high.
焊点中存在的主要缺陷是气孔，表面下塌，热裂纹，其中气孔主要为氧化膜气孔和匙孔不稳定形成的气孔。
The main defects of laser spot welding of aluminum are crater, hot crack and porosity which created by oxide film and keyhole instability,.
防止树脂砂含氮量高引起的氮气孔的方法是：选用低氮树脂、型砂或涂料中加入氧化铁粉和避免树脂受潮。
The measures to prevent nitrogen blow hole caused by high nitrogen content of resin sand are: adopting low nitrogen resin, adding iron oxide into sand or coating and keeping resin from moisture.
氧和二氧化碳从空气中进入气孔。
Oxygen and carbon dioxide from the air enter through the stoma.
过氧化氢(H2O2)是一个重要的信号分子，可以诱导气孔关闭。
Hydrogen peroxide (H2O2) is an important signal molecule that induces stomatal closure.
涂层在喷涂过程中所生成的气孔以及热氧化过程中由于热应力而产生的裂纹是造成涂层失效的直接原因。
The pores generated during spraying and the cracks generated during the course of thermal oxidization because of thermal stress are the direct reasons why coatings fail.
一个进气孔用于空气不间断的流入，检测呼吸空气的一氧化碳含量。
ASODD provides an extra inlet port to provide for an uninterrupted air supply should Carbon Monoxide condition exist in your Breathing air supply.
采用美国HARRISBLOCKADE 焊条焊接，具有焊接管内无氧化皮、咬合紧密、无气孔、永不泄漏等优点；
HARRIS BLOCKADE welding electrodes used by the U. S. , with welded tube-free oxidation of skin, bite close, non-porous, never leaks and other characteristics;
采用美国HARRISBLOCKADE 焊条焊接，具有焊接管内无氧化皮、咬合紧密、无气孔、永不泄漏等优点；
HARRIS BLOCKADE welding electrodes used by the U. S. , with welded tube-free oxidation of skin, bite close, non-porous, never leaks and other characteristics;
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