A method for making a thin, self-supporting disc from a substance, such as hydrogen, which is a gas at room temperature said disc being eventually located in a vacuum. A metal member is provided which defines a hole having a diameter small enough that at a sufficiently low temperature a ...
a然后就会产生一种物质叫磷化氢,它是一种气体物质,燃点很低,在常温下与空气接触便会燃烧起来 Then can produce one material to call the phosphine, it is one kind of gas material, ignite very lowly, then can burn under the normal temperature with the air contact[translate]...
aNorthwest Territories and Yukon (not shown). It is estimated by[translate] a. Most[translate] a90 Tcf is in British Columbia. If only a fraction of this resource can[translate] awhich of these is liquid at room temperature 哪些是液体的在室温[translate]...
Matter that has large spaces between the atoms and an indefinite volume is best described as: a. gas b. homogeneous c. liquid d. plasma e. solid Dry ice will go directly from a solid to a gas at room temperature. Going directly f...
We often read in novels how a seemingly respectable person or family has some terrible secret which has been concealed from strangers for years. 表面上道貌岸然的人或有声望的家庭,却有着骇人听闻,多年不让人知道的秘密,这样的事情我们经常在小说里读到. 《用法词典》 A lie which is half a truth ...
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Which gas would behave more ideally at the same conditions of pressure and temperature: CO or N_2? Why? What is the density of N2 gas at 0 degrees Celsius and 2.00 atm? Which substance is a gas at room temperature an...
Fresh air (9) is drawn into the burner (7) chamber by a fan (10) and the hot combustion gases pass over the heat exchanger coil (5) to heat the flow (3) output to the building services and the return (4) is kept at a lower than dew point temperature to condense the included wa...
Self-hosting is the practice of hosting and managing applications on your own server(s) instead of consuming from SaaSS providers. This is a list of Free Software network services and web applications which can be hosted on your own server(s). Non-Free software is listed on the Non-Free ...
This disclosure pertains to wall burners which are used to raise the temperature of a gas stream flowing through a duct. Wall burners are mounted outside the duct and fire into the duct through a porthole formed in the duct wall. The present invention is uniquely characterized by a pre-main...