除了它的燃烧性能可与汽油相比外。随着工业化进程的迅猛发展,燃烧完全,另外可使用较高的空气与燃料比例, 并且根据检测。另一方面。
据检测,已占所有大气污染源的60%左右,缓解大气污染,当汽油中掺入10%-20%乙醇时,汽油加入10%的变性燃料乙醇后,这种混合燃料排出的尾气完全可以符合加利福尼亚州严格的空气污染标准要求,使燃烧更彻底使用生物燃料可以改善生态环境。燃料乙醇的使用,减少汽车排放CO2量是防止地球气温升高的最有效的措施之一, 乙醇是良好的车用燃料,对大气污染日益严重的趋势可起到缓解作用。
以乙醇为例,目前以汽油为动力的汽车尾气对大气的污染程度,大大改善汽油的使用性能,可使汽车有害尾气排放总量减少33%以上,世界范围内汽车保有量快速增加,汽车发动机的压缩比可以提高,含氧量增加3.5%. 生物乙醇的燃烧产物为水,可使汽油辛烷值提高3%
主要是翻译第二段就好~
帮忙翻译下面的一段对话从英文至中文,请人工翻译~
答案:3 悬赏:0 手机版
解决时间 2021-03-17 11:05
- 提问者网友:世勋超人
- 2021-03-16 23:04
最佳答案
- 五星知识达人网友:长青诗
- 2021-03-17 00:27
s compression ratio can be improved, when the gasoline mixed with 10% -20% alcoholfor example, the amount of CO2 to reduce vehicle emissions to prevent global warming is the most effective measures, the other can use a higher proportion of air and fuel, ethanol is a good vehicle fuel. On the other hand. The use of fuel ethanol, the growing trend of air pollution may play a role in mitigation, in addition to its combustion performance can be compared with gasoline, this mixed fuel gas discharge can meet the strict California air pollution standards, burning completely. Bioethanol combustion product is water, and according to testing, the car engine'
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- 1楼网友:鸠书
- 2021-03-17 01:53
moreover, fromfig. 1(c), it can be
此外,fromfig。1(c),它可以
found that some of the tin powders were agglomerated from
发现某些锡粉末的团聚
fine tin particulates (fig. 1(c)). 50 wt.% al2319 and 50 wt.% tin
精细tin颗粒(图1(c))。50重量%和50重量%的锡al2319
(corresponding to 32.7 vol.%tin) powders were mechanically
(对应32.7体积%的锡)的粉末进行机械
blended as feedstocks. for comparison, pure al2319 coating
混合原料。相比之下,纯al2319涂层
was also deposited. al plateswere used as substrates andwere
也沉积。铝plateswere用作衬底的
sand-blasted prior to spraying.
喷砂喷涂之前。
the coating cross-sectional structure was observed with
观察了涂层的横截面结构
optic microscopy (om) and scanning electron microscopy
光学显微镜(om)、扫描电子显微镜
(sem). the polished cross-sectionswere etched by a solution of
(sem)。光交叉sectionswere通过溶液蚀刻
100 ml h2o+3mlhf+6mlhno3. estimation of coating porositywas
100毫升h2o + 3mlhf + 6mlhno3。涂层porositywas估计
performed through metallurgical image analyses using
通过金相图像进行分析使用
at least 10 cross-sectional micrographs. vickers hardness
至少10的横截面的显微照片。维氏硬度
measurement was performed on the polished cross-sections
在抛光横截面进行测量
using a leitz microhardness tester with a load of 200 g and a
用leitz显微硬度计与200克的负载和
dwell time of 15 s. more than 15 values from random locations
15秒的停留时间。15多值随机位置
on the polished cross-section were averaged for calculating
在光滑的截面进行平均计算
the mean hardness. the coating/substrate adhesive strength
平均硬度。涂层/基体的粘结强度
was measured using pull-off test (astm c-633-79). the commercially
利用拉拔试验测定(astm c-633-79)。商业
available adhesive film (fm 1000), having a nominal
可用的胶膜(调频1000),有一个名义上的
tensile strength up to 60mpa, was used. the assembled test
抗拉强度达到60mpa,使用。组装测试
pieceswere tested with a speed of 0.78mm/min using estotest
pieceswere速度与0.78mm/min使用estotest测试
50 tensile tester. for each coating, five test specimens were
50拉伸试验机。各涂层的试样,五
used. the fractured surfacewas obtained through bending the
用。发现通过弯曲断裂
substrate to peel the coating.
衬底剥离涂层。
有些词语翻译过来怎么还是他本身啊
我是一句一句翻译的
- 2楼网友:上分大魔王
- 2021-03-17 01:39
the use of biofuels can improve the ecological environment, alleviate air pollution. With the rapid development of industrialization, the worldwide rapid increase in car ownership, the current gasoline-powered automobile exhaust pollution of the atmosphere, accounting for 60% of all air pollution sources around.
Ethanol, for example, ethanol is a good vehicle fuel, in addition to its combustion performance can be compared with gasoline, the car engine's compression ratio can be improved, the other can use a higher proportion of air and fuel, burning completely. On the other hand, the amount of CO2 to reduce vehicle emissions to prevent global warming is the most effective measures. Bioethanol combustion product is water, and according to testing, when the gasoline mixed with 10% -20% alcohol, this mixed fuel gas discharge can meet the strict California air pollution standards. The use of fuel ethanol, the growing trend of air pollution may play a role in mitigation.
According to the testing, a 10% denatured fuel ethanol, the octane number of gasoline could rise by 3%, 3.5% oxygen content, can reduce automobile emissions of harmful exhaust more than 33%, greatly improving the use of gasoline performance, more thorough combustion.
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