Question

哪位英文高手帮忙翻译一下，感激不尽！

沼气(biogas)
沼气是一些有机物质（如秸杆、杂草、树叶、人畜粪便等废弃物）在一定的温度、湿度、酸度条件下，隔绝空气（如用沼气池），经微生物作用（发酵）而产生的可燃性气体。沼气是气体的混合物，其中含甲烷60～70％，此外还含有二氧化碳、硫化氢、氮气和一氧化碳等。它含有少量硫化氢，所以略带臭味。发酵是复杂的生物化学变化，有许多微生物参与。反应大致分两个阶段：（1）微生物把复杂的有机物质中的糖类、脂肪、蛋白质降解成简单的物质，如低级脂肪酸、醇、醛、二氧化碳、氨、氢气和硫化氢等。（2）由甲烷菌种的作用，使一些简单的物质变成甲烷。

要正常地产生沼气，必须为微生物创造良好的条件，使它能生存、繁殖。沼气池必须符合多种条件。首先，沼气池要密闭。有机物质发酵成沼气，是多种厌氧菌活动的结果，因此要造成一个厌氧菌活动的缺氧环境。在建造沼气池时要注意隔绝空气，不透气、不渗水。其次，沼气池里要维持20～40℃，因为通常在这种温度下产气率最高。第三，沼气池要有充足的养分。微生物要生存、繁殖，必须从发酵物质中吸取养分。在沼气池的发酵原料中，人畜粪便能提供氮元素，农作物的秸杆等纤维素能提供碳元素。第四，发酵原料要含适量水，一般要求沼气池的发酵原料中含水80％左右，过多或过少都对产气不利。第五，沼气池的pH值一般控制在7～8.5。

Answer 1

Methane (biogas)
The methane is some organic matter (for example reject and so on straw, weed, leaf, person livestock excrement) under the certain temperature, the humidity, the acidity condition, the isolation air (for example with methane-generating pit), the ignitable gas which (fermentation) produces after the microorganism function. The methane is the gas mixture, in which contains methane 60 ~ 70%, in addition also includes the carbon dioxide, the hydrogen sulfide, the nitrogen and the carbon monoxide and so on. It includes the few hydrogen sulfide, therefore slightly brings the fetid odor. The fermentation is the complex biochemistry change, some many microorganisms participation. The response approximately divides two stages: (1) microorganism's complex organic matter in carbohydrate, the fat, the protein degrades the simple matter, like the preliminary fatty acid, is mellow, the aldehyde, the carbon dioxide, the ammonia, the hydrogen and the hydrogen sulfide and so on. (2) by the methane mold mushroom spawn's function, causes some simple matter to turn the methane.

Must normally produce the methane, must for the microorganism creation good condition, enable it to survive, the reproduction. The methane-generating pit must conform to the many kinds of conditions. First, the methane-generating pit must be airtight. The organic matter ferments the methane, is the many kinds of 厌氧菌 active result, therefore must create a 厌氧菌 active the oxygen deficit environment. When makes the methane-generating pit must pay attention to the isolation air, air-tight, does not seep. Next, in the methane-generating pit must maintain 20 ~ 40 ℃, because usually produces being mad rate under this kind of temperature to be highest. Third, the methane-generating pit must have the sufficient nutrient. The microorganism must survive, the reproduction, must absorb the nutrient from the fermentation matter. In the methane-generating pit fermentation raw material, the person livestock excrement can provide the nitrogen element, crops' cellulose and so on straw can provide the carbon element. Fourth, the fermentation raw material must contain the right amount water, generally requests the methane-generating pit in the fermentation raw material to contain water about 80%, excessively are many or the too few all to produces is mad disadvantageously. Fifth, methane-generating pit pH value general control in 7 ~ 8.5.

Answer 2

The methane is some organic matter (for example reject and so on straw, weed, leaf, person livestock excrement) under the certain temperature, the humidity, the acidity condition, the isolation air (for example with methane-generating pit), the ignitable gas which (fermentation) produces after the microorganism function. The methane is the gas mixture, in which contains methane 60 ~ 70%, in addition also includes the carbon dioxide, the hydrogen sulfide, the nitrogen and the carbon monoxide and so on. It includes the few hydrogen sulfide, therefore slightly brings the fetid odor. The fermentation is the complex biochemistry change, some many microorganisms participation. The response approximately divides two stages: (1) microorganism's complex organic matter in carbohydrate, the fat, the protein degrades the simple matter, like the preliminary fatty acid, is mellow, the aldehyde, the carbon dioxide, the ammonia, the hydrogen and the hydrogen sulfide and so on. (2) by the methane mold mushroom spawn's function, causes some simple matter to turn the methane.

Must normally produce the methane, must for the microorganism creation good condition, enable it to survive, the reproduction. The methane-generating pit must conform to the many kinds of conditions. First, the methane-generating pit must be airtight. The organic matter ferments the methane, is the many kinds of 厌氧菌 active result, therefore must create a 厌氧菌 active the oxygen deficit environment. When makes the methane-generating pit must pay attention to the isolation air, air-tight, does not seep. Next, in the methane-generating pit must maintain 20 ~ 40 ℃, because usually produces being mad rate under this kind of temperature to be highest. Third, the methane-generating pit must have the sufficient nutrient. The microorganism must survive, the reproduction, must absorb the nutrient from the fermentation matter. In the methane-generating pit fermentation raw material, the person livestock excrement can provide the nitrogen element, crops' cellulose and so on straw can provide the carbon element. Fourth, the fermentation raw material must contain the right amount water, generally requests the methane-generating pit in the fermentation raw material to contain water about 80%, excessively are many or the too few all to produces is mad disadvantageously. Fifth, methane-generating pit pH value general control in 7 ~ 8.5.

Answer 3

猛