Helium is a colorless, odorless gas.
氦是一种无色无味的气体。
The balloons filled with
helium float in the air.
充满氦气的气球在空中飘浮。
Helium is used in MRI machines to create a magnetic field.
氦被用于MRI机器中产生磁场。
The cryogenic tanks store liquid
helium at extremely low temperatures.
液氦储罐在极低温度下储存氦气。
Astronauts breathe
helium-enriched mixtures during spacewalks.
宇航员在太空行走时会呼吸含氦的混合气体。
Helium is a non-toxic and inert element, making it safe for various applications.
氦是非毒性的惰性元素，适用于多种用途。
Scientists use
helium as a coolant in superconducting magnets.
科学家用氦作为超导磁铁的冷却剂。
The discovery of
helium led to the development of modern diving equipment.
氦的发现推动了现代潜水设备的发展。
Helium is not found naturally on Earth but is extracted from natural gas deposits.
地球上自然不存在氦，但它可以从天然气矿床中提取。
In parties, people often use
helium-filled party balloons to create high-pitched voices.
在派对上，人们常常用填充氦气的气球来制造高音调的声音。
Helium is a very light gas.
氦是一种非常轻的气体。
Once completed, the plant will have an annual natural gas processing capacity of 42 billion cubic meters and annual helium production capacity of 6 million cubic meters, which will make it the largest natural gas processing plant in Russia and one of the largest in the world.
Some of its milestone accomplishments after it first entered China in 1987 include providing hydrogen fueling technology for the 2008 Beijing Olympics, supplying helium to fill the large balloons for the 60th anniversary of the founding of the People's Republic of China, and producing enriched oxygen for passengers on the world's highest passenger trains running on the Qinghai-Tibet Railway.
In light of the increasing standards of healthcare in China, Air Products experienced an increase in sales for liquid helium, which is used in magnetic resonance imaging scanners to keep the superconducting magnet at -269C.
China's cryogenic industry stepped onto a new stage early this year, when a crane slowly loaded a specialized helium refrigerator onto a container headed for Canada during a launching ceremony in Zhongshan, Guangdong province.
"Now, our fully self-developed helium refrigerators can provide not only the low temperatures required for liquefied hydrogen production, but also even lower temperatures, filling gaps in the gas industry chain and laying a solid foundation for more advanced cryogenic technologies in future research and development," Zhu said.
Fullcryo had already developed helium refrigerator models that could reach the low temperatures required to produce liquefied oxygen and liquefied nitrogen, neither of which is as low as those needed to liquefy hydrogen.
Each unit of Fullcryo's largest helium refrigerator produces up to 5 metric tons of liquefied hydrogen a day.
A groundbreaking ceremony for a helium extraction project was held recently in Otog Front Banner in Ordos, Inner Mongolia autonomous region.
It will be the largest helium extraction base in the nation when put into operation in September.
With an investment of 60 million yuan ($9.4 million), the project will extract helium from BOG — boil-off gas — generated by 600,000 metric tons of liquefied natural gas, according to Yahai Energy Development Co. As a non-renewable resource, helium is an important strategic substance, known as "golden gas".