For sewage or similar water - based mixtures containing solids , grease or fat , the closedloop - cooled motor design is the preferred choice whenever the horsepower size required exceeds the practical limit for de - rating of conventional submersible motors 对于污水或类似的包含固体颗粒、油脂或脂肪的水混合物,闭合回路冷却电机设计结构是最好的选择,只要所需的功率大小超过常规潜水电机降级的使用限制指标。
Other imperfections are due to the practical limits to which correction can be made for systematic effects , such as offset of a measuring instrument , drift in its characteristics between calibrations , personal bias in reading an analogue scale or the uncertainty of the value of a reference standard 其它非理想性因素是由于对系统效应的修正产生的实际限制,比如测量仪器的误差,两次校验之间的性质偏移,个人读取量数的偏差或者参考标准值的不确定性。
Traffic safety , efficiency and environmental protection are three major goals of transportation . refering to these goals , an overview of current status and trends of transportation are presented in this paper . the paper also discusses possible solutions for future transportation and concludes with view points as follows . the integration of technologies of computer telecommunication and transportation will totally change the world as well as the life style of mankind . green energy , advanced material and other favourable technologies for environment are the growth points related to transportation . traditional technologies are likely to be very close to their practical limits . the adjustment of academic infrastructure of wtu is in urgent needs for the survival and developement in 21st century which will be full of competition 依照交通的三大目标,即安全、效率及环境保护,分析了当前的现状和趋势,介绍了解决问题的途径,指出远程通信和智能交通系统的出现将会使人类的生活发生极大的变化.与交通密切相关的绿色能源和先进材料等环境友好技术也将是21世纪新的增长热点.而传统技术则已非常接近极限.在充满竞争的新世纪到来之时,武汉交通科技大学的学科结构必需及时地进行重大的调整
Abstract : traffic safety , efficiency and environmental protection are three major goals of transportation . refering to these goals , an overview of current status and trends of transportation are presented in this paper . the paper also discusses possible solutions for future transportation and concludes with view points as follows . the integration of technologies of computer telecommunication and transportation will totally change the world as well as the life style of mankind . green energy , advanced material and other favourable technologies for environment are the growth points related to transportation . traditional technologies are likely to be very close to their practical limits . the adjustment of academic infrastructure of wtu is in urgent needs for the survival and developement in 21st century which will be full of competition 文摘:依照交通的三大目标,即安全、效率及环境保护,分析了当前的现状和趋势,介绍了解决问题的途径,指出远程通信和智能交通系统的出现将会使人类的生活发生极大的变化.与交通密切相关的绿色能源和先进材料等环境友好技术也将是21世纪新的增长热点.而传统技术则已非常接近极限.在充满竞争的新世纪到来之时,武汉交通科技大学的学科结构必需及时地进行重大的调整
practical: adj. 1.实地的,事实上的,实际上的 (opp. t ...limit: n. 1.界限,界线;边界。 2.极限,限度;限制。 3 ...practical residue limit: 残留允许量; 实际残留极限; 实际残留限度; 实际残留限量be practical: 实际一点吧practical: adj. 1.实地的,事实上的,实际上的 (opp. theoretical)。 2.实践的,实地经验过的,练习过的,经验丰富的,老练的。 3.实用的,应用的;注重实用的;〔贬义〕只讲实用的。 4.(人等)有用的,会做事的,能干的。 5.有实效的;可行的。 6.实事求是的,注重实行的。 practical considerations 需要切实考虑的事情,实际问题。 practical duty 实际工作。 the practical rulers 事实上的统治者。 a practical joker 耍弄别人的人。 practical experience 实际经验。 practical politics 实际政治,行得通的政治。 practical minds 讲求实际的头脑;注重实际的人。 be not practical 不实际,不能落实。 for (all) practical purposes 实际上。 n. -ness be at a limit: 在能接受的限度内limit: n. 1.界限,界线;边界。 2.极限,限度;限制。 3.〔pl.〕范围,范域。 4.限价;限额;赌注限额;猎物限额。 place limits on the number of men 限制人数。 set a limit to ... 对…加以限制。 the danger limit 危险线;极点。 reach the limit of one's patience 忍无可忍了。 limit value 【数学】极限值。 the age limit for enlistment 入伍的年龄限制。 There is a limit to everything. 凡事都有限度。 be the limit太过分,叫人无法容忍。 go beyond [over] the limit超过限度。 go the limit运动赛完全局[全场]。 go to any limit竭尽全力。 off limits 〔美国〕(军人)禁入地区 (Off limits to all unauthorized personnel. 闲人免进)。 on limits 〔美国〕(军人)活动地区。 reach the limit of one's resources 山穷水尽。 the inferior limit 1. 最迟的限期。 2. 最小的限额。 the limit 〔口语〕使人无法容忍的人[物],到了绝顶的事物。 the limit man 在赛跑时受最大让步的运动员。 the superior limit 1. 最早的限期。 2. 最大的限额。 That's the limit . 这算到头了,不能再容忍了。 to the (utmost) limit 到极点 (strain oneself to the limit竭尽全力)。 within limits 适当地,在一定范围之内。 within the city limits 在市内。 within the limits of 在…的范围之内。 without limit 无限制地,无限地。 vt. 1.限制,限定。 2.减少。 limit the number to fifty 把数目限制到五十。 limit the expenses 节省开支。 adj. -able limit to: 限于; 限制,限定limit…to: 把…限制在…范围内no limit: 没有限制; 无限额; 无限制; 无止境公司to the limit: 到顶点,到最大限度; 惊爆死亡线; 玩到极限with limit: 有难度限制42) practical: 实际的a practical joke: 恶作剧ecomomical and practical: 经注实惠的economic and practical: 经济实用economical and practical: 经济实惠; 经济实用economically practical: 经济上可行的; 经济上切实可行的examination, practical: 实际操作考试in a practical way: 从实际角度in practical terms: 实际上light and practical: 精巧实用mechanics-practical: 力学实验not sentimental practical: 不感情用事的practical a licability: 专利的实用性