氧气

The symptoms of altitude sickness include nausea, lightheadedness, dizziness, headache, swelling in the feet, and sleep problems.

在高海拔的地方气压较低，平均吸入的氧气量较少。

Airline cabins are commonly pressurized to altitudes of 1,524 to 2,438 meters, or about 5,000 to 8,000 feet, above sea level. Healthy people have no problem at such altitudes, but those with underlying heart or respiratory disease who may already have low levels of oxygen in their blood can develop symptoms of mountain sickness — fatigue, headache , lightheadedness and nausea.

客机飞行在海拔1524米到2438米，或者5000至8000英尺的高空时，航班客舱里只是一般性的加压，健康的人在这样的高度不会有问题，但是那些心脏衰弱或者有呼吸疾病的人——他们的血液里氧气水平低——会引起山峰病的症状，如疲劳、头痛、头晕和恶心。

The invention relates to a method for stocking and preserving green round wood and sawn timber, which is stored in an airtight and lighttight sealing cover. The oxygen inside the cover is decomposed by the respiratory process of mushrooms, bacteria and wood cells that are still alive, thereby forming CO2 and H2O.

本发明涉及用来保存绿圆木或锯成木材的方法，其中将绿圆木或锯成木材储存在不透气和不透光的包覆层下面，所述包覆层以内的氧气被真菌和细菌的呼吸和发酵过程以及仍然存活的木细胞的呼吸过程所消化，因此产生CO2、H2O。

Except one lungless species -''Typhlonectes eiselti'', only known from one specimen collected somewhere in South America - all Caecilians have

除了在南非发现的''Typhlonectes eiselti''没有肺之外，所有无足目的生物都有肺，但是他们同时也使用皮肤与口进行氧气的吸收。

First Person to Hike from Sea Level to Summit, No Oxygen: May 11, 1990,Tim Macartney Snape, Australian.

从海平面高度远足到顶峰的第一人，还没用氧气：1990年， Tim Macartney Snape，澳大利亚人。

We report a 36-year-old man with MELAS in whom a 5-month course of high-dose oral idebenone, a derivative of coenzyme Q10, increased markedly cerebral metabolic ratio of oxygen and oxygen extraction fraction without increased cerebral blood flow with PET.

我们报告了一例36岁患MELAS（线粒体脑肌病伴高乳酸血症和卒中样发作）的患者，在口服一种辅酶Q10衍生物艾地苯醌后，显著地增加了氧气和氧提取部分的比例而同时不增加患PET症的患者的脑血流量。

Monomers A monomer is the basic building block of polymers.The word mer (from the Greek meros,meaning part) indicates the smallest repetitive unit,similar to the term unit cell in crystal structures.Thus,polymer means many mers or units.Monomers are organic materials.They include carbon atoms joined in covalent bonds with other atoms such as hudrogen,oxygen,nitrogen,fluorine,chlorine,silicon,and sulfur.

单体 单体是基本积木的polymers.the字经（从希腊美罗斯，这意味着部分）显示，最小的重复单位，类似的任期股细胞在晶体structures.thus ，高分子意味着许多市场汇率或units.monomers是有机materials.they包括碳原子加入共价键，与其他原子如hudrogen ，氧气，氮气，氟，氯，硅，硫。

There are three platinum catalyst micro channels which have different width ,such as 1000 m , 400m and 40m. The platinum catalyst micro channel reactor is fabricated by MEMS technology. The reactor uses the exothermic reaction of hydrogen and oxygen on the platinum catalyst plate as the heat source and the platinum thin film resistance deposited on a glass chip by face micro machining process as catalyst and temperature sensor. The channel is bonded with a cover plate etched by bulk micromachining technology to become a mico- channel reactor.

实验主要以微机电加工技术制作白金触媒微管道反应系统，利用微机电面型加工技术将白金薄膜电阻制作於基材为玻璃的晶片上，以此为反应所需的触媒及温度量测元件，并用体型加工技术蚀刻出微流道的上盖板相结合成微管道反应系统，本研究以1000μm、400μm及40μm的白金触媒微管进行测试，并利用微管道管壁上触媒表面降低反应活化能的特性来维持反应，此微反应系统利用氢气与氧气在白金触媒平板上的放热反应作为能量的来源。

In the present communication, a modification of the combustion method for the microdetermination of carbon and hydrogen was described, in which the sample was covered with the thermal decomposition product of AgMnO_4 and the combustion tube was filled with the same reagent.

用高錳酸銀热分解产物复盖在試样上进行灼烧和用同一試剂作固定填充剂并采用較高的氧气流速能使有机物在三分钟內氧化完全。为闡明燃烧过程，故比較本法、Krbl法和套管热分解法所产生的二氧化碳热导曲线。

Miscut SrTiO_3 (001) substrates were pretreated by ex situ annealing inflow oxygen and in situ annealing in vacuum.

采用流动氧气中退火和真空原位退火法对斜切SrTiO_3 (001)基片进行了预处理。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。