英语翻译A theoretical study to compare the sensitivity standards for smoke detectors [8] was completed.The study compared four standards:Draft ISO/DIS 12239 [7],BS 5446:Part 1 [1],UL 217 [5] and the proposed revision of BS 5446:Part 1 [4] to deci

来源：学生作业帮助网 编辑：作业帮 时间：2024/11/08 10:59:49

英语翻译A theoretical study to compare the sensitivity standards for smoke detectors [8] was completed.The study compared four standards:Draft ISO/DIS 12239 [7],BS 5446:Part 1 [1],UL 217 [5] and the proposed revision of BS 5446:Part 1 [4] to deci
英语翻译
A theoretical study to compare the sensitivity standards for smoke detectors [8] was completed.The study compared four standards:Draft ISO/DIS 12239 [7],BS 5446:Part 1 [1],UL 217 [5] and the proposed revision of BS 5446:Part 1 [4] to decide whether the proposed revision of BS 5446 could be accepted in place of the existing BS 5446.The study also reviewed the similarities between the fire test specifications for the existing and revised BS 5446 and also the existing European standard for commercial detectors (EN 54).The study concluded that BS 5445 and BS 5446 (revised) had effectively the same requirements on fire sensitivity.Furthermore,it appeared that BS 5446 (original) required a greater fire sensitivity when compared to BS 5446 (revised).It further concluded that BS 5446 (original) and BS 5446 (revised) could not be directly compared as they used different sets of fire tests and different pass/fail parameters.
The fire tests were selected so as to closely match the fire sensitivity specified in BS 5445 :Part 9 :1984 [2] (TF 2-5) or the draft ISO standard [7] (TF 7).In addition,two non-standard tests were conducted as representative of realistic fire scenarios that occur in dwellings (Table 1).The fire tests that matched the sensitivity tests are referred to as the ‘standard’ tests and the two realistic fires are referred to as the ‘ad-hoc’ tests.The downstairs dining room (at the rear) and the upstairs bathroom were both sealed.The doors to the other two first floor bedrooms were kept closed for all of the tests.The kitchen door was closed for all tests apart from Test 10.The fire tests were terminated once all detectors had gone into alarm or when it was considered that no more detectors would raise an alarm.

英语翻译A theoretical study to compare the sensitivity standards for smoke detectors [8] was completed.The study compared four standards:Draft ISO/DIS 12239 [7],BS 5446:Part 1 [1],UL 217 [5] and the proposed revision of BS 5446:Part 1 [4] to deci
理论研究标准比较敏感的烟雾探测器[8]都完成了.这项研究比较了四种标准:草稿ISO / DIS 12239[7],BS 5446:第一部分[1][5],UL 217建议和修改本科以上5446:第一部分[4]来决定该修改5446可以接受专业的本科以上5446存在的地方.这项研究还回顾了火测试规格相似之处使用现有的和修订5446并获得现有的欧洲标准为商业探测器(EN第54条).研究认为,BS,5445 5446(修订)获得有效放火烧了同样的需求敏感.此外,现在看来,本科以上5446(原件)需要一个强大的火灵敏度相比5446 BS(修订).进一步得出结论,本科以上5446(原件)、BS(修订)5446不能直接比较,他们用不同的火灾试验和不同的通过/不通过参数.
选择的火灾试验,密切配合专业的火中规定5445敏感性组分:9:1984年[2](技术),或者是2 ISO标准草案[7]技术(7).此外,两个非标准的试验是为代表的真实的火的情景,发生在住处(表1).匹配的火灾试验的灵敏度测试被称为“标准”的测试和两个现实火灾都被称为“特别的测试.楼下的食堂(在尾部)和楼上的浴室都密封.门到另外两个一楼卧室是保持关闭了所有的测试.厨房的门关闭了所有的测试除了测试10.终止的火灾试验一旦所有探测器进入了报警或当认为探测器会提高不再发出警报.

英语翻译in a healthy and stimulating educational environment ,the imparting of theoretical knowledge is invariably synthesized with the cultivation of practical,employable skills. 英语翻译We sampled until we reached theoretical saturation for the transformation process,i.e.until a recurring pattern for the transformation emerged from our interviews. I passed my theoretical test without a hitch!是什么意思 theoretical是什么意思 求解几道sat语法题1、Sam is a professor of theoretical physics,(while his brothers are architects) with outstanding reputations.正确答案是and his brothers are architects.这里while为啥不行啊?2、St.Petersburg was renamed Leningrad a 英语翻译Not only is educates fairness a general problem,is also a social problem; not only a theoretical problem,but also a practical problem.这句话是我翻译的,请大家看看有什么语法错误吗 英语翻译A theoretical study on TiO2 morphology (or shape) prediction using a thermodynamic model based on surface energies and tensions also obtained similar results.However,the rod-shaped anatase with a high aspect ratio was observed in the pres 英语翻译It has been shown by Defosseet al.that one may calculate the theoretical intensity ratioI0p/I0s expected for a supported phase (p) atomically dispersed on a carrier (s). 英语翻译students will assess the usefulness of a methodological approach,showing awareness of the theoretical debates...practical,methodological and ethical issues which can emerge from utilising this approach.e.g.student would choose a particula 英语翻译Although a systematic over view of deviations from the set-point paradigm and a discussion of their theoretical implications are currently lacking,there is cumulative evidence that something is wrong with the set-point paradigm.外文翻 英语翻译Gross graduation ratio.The number of graduates,regardless of age,in a given level or programme expressed as a percentage of the population at the theoretical graduation age for that level or programme.浪费彼此时间, 英语翻译Gross entry ratio.The total number of new entrants to a given programme,regardless of age,expressed as a percentage of the population of theoretical entrance age to this programme.浪费彼此时间, 英语翻译Expected gross primary graduation ratio.The number of children in a given year,regardless of age,who are expected to graduate from primary education expressed as a percentage of the population of theoretical entrance age to primary educat 英语翻译Arguably ethnomusicology’s most important theoretical move has been a sustained attack,over more than a half century,on the notion,purveyed until recently by its sister discipline historical musicology,that music is primarily an art for 英语翻译For me,the physics and mathematics community is the community of mathematicians and theoretical physicists. 英语翻译The video tracks on this album introduce the four main theoretical perspectives in social psychology 英语翻译Integrating theoretical work on the nature of entrepreneurial opportunities with cog-nitive science research on the use of similarity comparisons in making creative mentalleaps,we develop a model of opportunity identification that include 英语翻译The selection of modeling and machining parameters for glass mould fabrication in ophthalmic lenses production,has required thedefinition of a theoretical–empirical model of the ground surface in order to predict the overall geometry er