drift n. 1.漂亮;(潮流的)推进力。 2.漂流物;吹积物;堆积物;【地质学;地理学】冰碛,漂砾。 3.倾向,趋势;动向。 4.大意,要点,要旨。 5.(政策等的)坐观,放任自流。 6.流速;(船等的)流程,漂流距离;(滑车的)伸展距离。 7.(仪表的)漂移;偏移;【海,空】偏航,偏流;(飞弹的)航差;【无线电】偏移;偏差。 8.【矿物】水平巷道;小平道。 9.〔南非〕浅滩,滩。 10.【机械工程】冲头,冲孔器;打桩器。 11.〔方言〕(鸟等)群。 against the drift of a current 顶着潮流的压力。 be in a state of drift 心不自主,放任自流。 D- is as bad as unthrift. 放任自流和浪费一样坏。 a policy of drift 放任主义[政策]。 a drift of snow [leaves] 吹积成的雪[树叶]堆。 the amount of drift (船的)漂流距离。 a drift toward nationalism 民族主义的倾向。 the drift of an argument 争论的要点。 catch the drift of a talk 抓住谈话的要点。 a drift of ice 流冰。 a drift of sheep 羊群。 the drift of Nature 造化的威力。 electronic drift 电子(仪器)的漂移。 vt. 1.使漂流;使漂积[冲积];把…吹积;(吹积物等)覆盖。 2.【机械工程】(用冲头)冲孔。 The current drift-ed the boat to sea. 水流把船冲到海里去了。 a trail drift-ed with leaves 满是落叶的小道。 The wind drifted the snow. 风把雪吹成小堆。 vi. 1.漂,漂流;漂移;游荡。 2.被吹积成堆。 3.心不由主地走;不知不觉地陷入 (into) 渐渐趋向 (toward)。 perfume drifting into the room 飘进屋里的香气。 drift toward ruin 逐渐走向毁灭[破产]。 He drifted from town to town. 他在各个城市流浪。 drifting sand 吹积成的沙堆。 drift apart from sb. 逐渐疏远某人。 drift off to sleep 慢慢地睡着了。 drift down the river 顺流而下。 drift (along) (through life) 随波逐流地过一辈子。 drift into (errors) 不自觉地犯了错误。 let things drift 听天由命。
zero n. (pl. zeros, zeroes) 1.【数学】零;零号。 2.零位;零点,起点;(温度表的)零度,冰点;座标原点;无。 3.最低点;【天文学】天底;【航空】零高度。 4.没价值的人[物]。 5.【军事】= zero hour. the absolute zero 【物理学】绝对零度〔-273.16℃〕。 the air zero 原子弹空中爆炸中心。 fly at zero 超低空(1000英尺高度以下的)飞行。 vt. 1.把(调节器等)调整到零位。 2.把…减少到零位。 zero in 1. 调整(枪炮的)射距,把(枪炮等的标尺)调整到标准无风部位瞄准。 2. 把(火力)对准目标 (on)。 zero out 给…以免税待遇(to zero out funding for public broadcasting 对用于公共广播的经费实行免税)。 adj. 1.零(度)的。 2.【气象学】云幕低于50英尺,能见度小于165英尺的。
zero-zero n. ,adj. (1)【气、空】云幕和能见度极低(的)。 (2) 双零方案〔指从某一有争议地区全部撤走双方核力量等的方案〕。 2.vt. 把…减到零;把…调整到零位。
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例句与用法
Correction of zero drift 零漂改正
Loading zero drift -负载零点漂移
Thermal zero drift 热零点漂移
In the first part of the paper , general principles of computer data collection system is explicitly introduced , the ways of enhancing measuring precision on system which include the confirmation of time sampling , the choice of a / d converter and automatic control of measurement range are studied . with the way of software filtering , random errors are eliminated ; with the ways of software and hardware , the problems of checking the non - linear state on channels and zero drift 本文首先介绍了计算机数据采集系统的一般原理,研究了提高系统测量精度的方法,包括采样时间的确定, a d转换器的选择和量程的自动控制;以软件滤波的方法消除随机误差和奇异点;用软件和硬件方法解决检测通道非线形化和零点漂移的问题。
Thirdly , in the environment of labview , several kinds of vis used for sensor signal test are designed , including wave generation , time domain measurement , filter disposal , frequency analysis , etc . after that , wavelet analysis in the application of one - dimensional signal de - noise is studied , threshold and translation invariance wavelet de - noise are realized , and wavelet de - noise vi for zero drift signal of the fiber optic gyro in fcs is designed using labview 接着,在labview环境下开发了多种用于传感器信号测试的虚拟仪器,具有波形发生、时域测量、滤波处理、频谱分析等多种功能。随后,研究了小波分析在一维信号消噪中的应用,实现了labview环境下的阈值法和平移不变量法小波消噪,并利用labview设计了飞控系统中光纤陀螺零漂信号的小波消噪仪。
Since it has the advantage of no moving components , impulse signal output , strong medium adaptability , high measurement accuracy , wide measurement range , low - pressure drop , no zero drift and easy to maintenance , it is wide accepted that the vortex type fluid oscillatory flowmeter is ideal flowmeter in the measurement of gas , liquid , steam and mix / corrosive fluid 这类的流量计兼有无运动部件,脉冲数字输出,计量不受被测流体性质影响,测量准确度较高,量程比宽,无零点漂移,压力损失小,便于安装维护等优点,是测量气体,液体,蒸汽,混合型和腐蚀性流体的理想的流量计。
To approach practical system , some unit model is built by practical test . and to make pid parameters adjustment easily , what influence will happen when pid parameters is changed is studied in this dissertation . to avoid serious influence of nonlinear zero drift , an integral value processing method is proposed and applied in the practical implement of the system 在系统数学建模的过程中,采用了实验法对部分控制单元的实际特性进行了测试分析得到其数学模型,因此本系统的数学模型更能准确的反映实际跟踪控制系统的动态本质,从而为实际系统的研制提供了合理的理论基础。
In general , a precise resistor is in series with one of the resistors in wheatstone bridge to compensate the zero offset , and the other one is in parallel with another arm of the wheatstone bridge to compensate thermal zero drift . based on this principle , in this paper , a compensation method based on virtual instrument technology has been put forward . actuated by current source , a good calculation method of compensation resistors and their position in the bridge is deduced 本文基于串并联电阻补偿法的原理,提出了一种基于虚拟仪器的误差补偿方案,推导了在恒流源供电下可以精确的计算出补偿电阻大小和补偿位置的算法,并且在虚拟仪器软件平台labview上完成了数据采集、处理、显示等软件的设计,经过实验的验证,对传感器的零点温度漂移补偿取得较好的效果,而对灵敏度温度漂移的工艺补偿亦有一定的效果。