threshold n. 1.门槛;入口,门口。 2.【心理学】阈限。 3.界限,限度。 4.【物理学】临界值,阈。 5.入门,开始,开端。 Seniors of the threshold of the diplomatic career are expected to take this course. 希望即将从事外交工作的四年级生选修本课程。 at the threshold of 在…的开始,就要开始的时候。 cross sb.'s threshold 走进某人家里。 cross the threshold 跨进门内。 on the threshold 在门口。 on the threshold of 在…的开头,就要…。
fault n. 1.过失,过错;罪过,责任。 2.缺点,缺陷,瑕疵。 3.(猎狗的)失去嗅迹。 4.【电学】故障,误差;漏电;【地质学;地理学】断层。 5.【网球】发球出界;犯规。 Faults are thick where love is thin. 〔谚语〕一朝情义淡,样样不顺眼。 fault detection 【机械工程】探伤。 The fault is his own. 这是他自己的错。 a grave fault in a theory 理论上的重大缺陷。 a fault in the machine 机械故障。 image fault 【物理学】像差,影像失真。 numerical faults 数值误差。 a fault on the right side 因祸得福。 be at fault 1. (猎犬追捕猎物等时)失去嗅迹,踌躇不前;不知所措,正在为难。 2. 出毛病,有故障。 3. = in fault (My memory is at fault . 我想不起来了)。 find fault in 看出…缺点。 find fault with 找…的岔子。 have no fault to find with 无错可寻。 hit off a fault (猎狗)闻出(曾一度错失的)嗅迹。 in fault 有过错,有责任 (Who is in fault 是谁的不是?)。 to a fault 过度,极端 (He is kind to a fault. 他过分老实)。 whip a fault out of sb. 鞭打某人使之改过。 with all faults 不保证商品没有缺点。 without fault 〔古语〕无误,确实。 vi. 1.【地质学;地理学】产生断层;有断层余迹。 2.发球出界;犯规。 3.〔方言〕责备,挑剔。 4.〔古语〕犯错误,做错。 vt. 1.找…的岔子,挑剔;〔方言〕责备。 2.【地质学;地理学】使产生断层。 3.把…做错。 He faulted my speech in two ways. 他认为我的讲话有两点不妥。 fault one's performance 表演发生失误。
A fault threshold expressed in terms of the number of faults in a prescribed period of time 以“在规定的时间间隔内出现的”故障次数来表示的一种故障阀值。
Through the application researches on 6135 type diesel engine , the feasibility and diagnosis accuracy of the method that using 0 . 5 order torsional vibration to determine the fault threshold value was verified 以6135柴油机为对象的应用研究验证利用0 . 5谐次扭振确定故障阈值方法的实用性和诊断准确性。
( 4 ) since there is no perfect theoretical guide , the characteristics of orthogonal wavelet , semi - orthogonal wavelet and biorthogonal wavelet in signal decomposition and reconstruction are compared , and the conclusion of the study demonstrates that semi - orthogonal wavelet is a good wavelet for fault diagnosis in tilting control system of tilting train . a new approach is presented for deciding the fault threshold . ( 5 ) a generalized wavelet neural network is put forward by integrating wavelet analysis with neural network ( 4 )针对小波基的选择缺乏完善理论指导的实际情况,通过对常用的正交、半正交、双正交小波基提取信号特性的比较,确定出了适合摆式列车倾摆控制系统故障诊断的小波基? ?半正交小波基,并提出了一种新的确定故障检测阈值的方法,可以快速地检测出故障发生时刻。