When using biodegradable plastics- usually made from starch- application has often been restricted as they are not sufficiently impermeable to oxygen.
美国大布道家葛培理牧师说:「人的器官有赖于氧气的供应,照样,人类也有赖于盼望的供应。
The Reverend Billy Graham writes,“As the human organism is dependent on a supply of oxygen, so humanity is dependent on its supply of hope.
切割时气体压力低于氧气压力。
The gas pressure is less than the oxygen pressure when cutting.
这类设备只能用于氧气检测,选择性极好。
This type of sensor can only be used for the detection of oxygen and has excellent selectivity.
仅次于氧气,水是我们最重要的营养素。
Next to oxygen water is the most important nutrient.
接下来,在更高的温度下将纯碳暴露于氧气或蒸汽浴中。
Next, the pure carbon is exposed to oxygen or steam baths at even higher temperatures.
最早的电化学传感器可以追溯到20世纪50年代,当时用于氧气监测。
The oldest electrochemical sensors date back to the 1950s and were used for oxygen monitoring.
当你的身体处于氧气浓度较低的环境中,比如在进行高原训练时…….
When you subject your body to a reduced concentration of oxygen, as is the case during high altitude training….
这颗卫星靠追踪太阳光反射到地球表面的亮度工作,特别关注于氧气和二氧化碳能够吸收的红外线波长。
The satellite works by tracking the brightness of sunlight reflected off Earth's surface, looking specifically at infrared wavelengths that oxygen and carbon dioxide absorb.
它们在暴露于氧气时不会点燃或爆炸。
They do not ignite or explode when exposed to oxygen.
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