The long gas pipeline is a regulating object of distributing parameter.
长输气管线是一个具有分布参数的调节对象。
This paper gives a theoretical and analytical solution of the dynamic response for long gas pipeline in the form of infinite series with Bessel functions.
本文以贝塞尔函数级数和的形式，给出了动态特性的理论解析解。
By tracking this ratio over time, he can determine how long gas has taken to reach the surface and gain clues to the chemical, thermal, and mechanical state of the rocks the gas is passing through.
通过追踪该比率随时间的变化，他可以确定氡气到达地表需要花费多长时间，同时获得气体所通过的岩石的化学、热力学和机械状态。
Natural gas and coal—also fossil fuels—have similarly seen price declines that look to be long-lived.
天然气和煤炭，还有化石燃料，也出现了类似的价格下跌，而且看起来会持续很长时间。
To be sure, the battery still has a long way to go before the nightly recharge completely replaces the weekly trip to the gas station.
诚然，在夜间充电完全取代每周去加油站之前，电池还有很长的路要走。
In the long run, electricity from large wind farms in remote areas might be used to make hydrogen gas from water during periods when there is less than peak demand for electricity.
从长远来看，在电力需求低于峰值的时期，偏远地区的大型风力发电场的电力可能会被用于电解水，以产生氢气。
How long until they go the way of gas street lamps and morning milk deliveries?
再过多久它们也将和煤气路灯与每天早晨送到家的牛奶一样，步入历史的尘埃？
Astronomers have long thought that a black hole ought to be surrounded by a torus of dust and gas.
天文学家长期认为黑洞应该是由一环尘埃和气体包围着的。
Composed of denser cooler gas and dust the tadpoles are around 10 light-years long, potentially sites of ongoing star formation.
蝌蚪是由密集的寒冷的气体和星尘所组成的，大约10光年长，可能存在正在形成的恒星。
A second process, called thermochemical pyrolysis, USES high temperatures and pressures to convert cellulosic biomass into long hydrocarbon chains that are similar to gas, diesel or jet fuel.
第二种方法也被称作“反应炉裂解法”：利用高温和压力将纤维素生物质转换成长烃链，这种长烃链和汽油、柴油、喷气式发动机燃料相类似。
There is a fairly long history of trying to determine how efficient gas clouds are at making stars.
人类研究气体云是否能高效制造恒星的历史已经很长了。
The warming effects of carbon dioxide as a greenhouse gas have been known for a long time, says Caldeira.
卡尔德拉说，二氧化碳作为温室气体而引起温室效应的说法由来已久。
In MACSJ0717, a 13-million-light-year-long stream of galaxies, gas and dark matter -- known as a filament -- is pouring into a region already full of galaxies.
在130万光年长的MACSJ0717，气体和暗物质（就像灯丝一样）正在进入一个已经充满了星云的地带。
The mice’s consumption of oxygen and production of carbon dioxide dropped ten minutes after they began inhaling hydrogen sulphide and remained extremely low as long as the gas was administered.
在吸入硫化氢气体10分钟后，老鼠的耗氧量和二氧化碳排出量出现下降，在硫化氢持续供应下会一直保持这种极低的状态。
If you're planning a road trip or have a long commute to work, Mapquest Gas Prices will allow you to plan a journey and find out where the gas will be cheapest along the way.
如果你正在计划一次驾车出游或是你上下班的路途遥远，Mapquest网站的油价搜索功能可以帮助你做好出行计划并在沿途找到最便宜的加油站。
In December a pipeline 7,000 km (4,400 miles) long opened, bringing gas from Turkmenistan to China, via Kazakhstan and Uzbekistan.
去年十二月，一条长达7000公里(4400英里)的输油管线正式投入长期使用，该管道从土库曼斯坦出发，途径哈萨克斯坦和乌兹别克斯坦，向中国输送石油。
But this is possible only because the pressure of the field is strong enough to keep the gas flowing through the long pipeline back to shore.
不过这可能只是这个气田的压力场强大到足以使天然气流经长距离的输管线回到岸上。
A long tendril of colder gas and dust extends many light years into the void from the receding ionization front.
低温气体和尘埃长长的卷须从渐行渐远的电离前沿一直延伸到数光年远的太空。
Although many sources of gas are already bound up in long-term contracts, optimists think Britain might be able to get more of it fairly easily.
尽管许多天然气的来源在长期合同中受到限制，乐观主义者认为英国仍有能力轻易获得更多的天然气来源。
I suspect the debate on this will be long, and the answers will be different for each shale gas formation; but it is important that we tackle this debate.
我认为关于(页岩气)的争论会持续很长时间，对于每个页岩气构造的回答也会不同；但重要的事我们要解决这一争论。
Set on Brook Road between Gladstone Park and the North Circular Road, the entrance leads down to a long and dank gas-proof concrete corridor.
它位于布鲁克路，在格莱斯顿公园和北环路之间，入口向下通往一条又长又湿的防毒气混凝土走廊。
Both sides should reach into a long-term plan on petroleum and natural gas cooperation. More efforts could also be made on the cooperation of nuclear energy.
他表示，能源是两国前景最好、最重要的合作领域之一，双方应制订石油天然气合作长期规划，同时也可大力开展核能合作。
The firm’s liability lasts as long as the landfill continues to generate leachate or gas.
只要那些垃圾仍然产生渗透水和气体，公司就仍担负着处理的义务。
The central questions facing renewables now, experts say, are how long credit will be tight and how low oil and natural gas prices will fall.
专家认为，可再生能源现在面临的首要问题是信贷紧缩会持续多长时间，原油和天然气价格会跌到什么程度。
The presence of gas vesicles and a long thin morphology should greatly improve its buoyancy in the completely unmixed water column of Lake Fryxell.
囊泡的气体和一条细长的形态存在，应大力改善其在弗里克塞尔湖完全粹水层浮力。
The researchers also considered how long each gas lingers in the atmosphere and looked at how those gasses interact to influence climate change.
研究人员还考虑了每种气体在大气中存在的时间，并观察这些气体如何相互作用，如何影响气候变化。
The researchers also considered how long each gas lingers in the atmosphere and looked at how those gasses interact to influence climate change.
研究人员还考虑了每种气体在大气中存在的时间，并观察这些气体如何相互作用，如何影响气候变化。
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