step vi. (-pp-) 1.走;跨步。 2.踩,踏上 (on)。 3.跳舞,轻快地走,合着步调走。 4.跨入,踏进。 5.走上。 vt. 1.跨,踏,踏入;走(…步)。 2.(用脚)步测(量) (out)。 3.跳舞。 4.使成梯阶,使成梯级状。 5.【航海】(将桅杆)竖立在桅座上。 S- this way. 请打这边走。 Will you step inside 请进来。 step on sb.'s toe 踩着某人脚趾。 step across 走过,横穿过。 step aside 1. 走到一旁。 2. 避到一旁;让给别人,让步。 3. 走错路;走入邪道 (“ Step aside!” barked the policeman. “躲开点!”警察大声喊着说)。 step back 1. 后退,后退一步。 2. 回想,回顾 (Henry remained silent, stepping back into the first time he met her. 亨利继续沉默着,回想他第一次和她相会的时候)。 step down 1. 走下,下(车)。 2. 辞退。 3. 退出。 4. 【电学】下降 ( I'm old enough to step down from the office. 我年纪够老该退休了。 a step down transformer 【电学】降压变压器)。 step forth=step forward 前进;奋起。 step high (马)飞跑。 step in 1. 走进。 2. 〔命令〕请进。 3. 调停,排解;介入,干涉;挤进。 step into an estate 得到财产。 step into sb.'s shoes 接替某人,接任某人的位置。 step it 1. 跳舞。 2. 走着去。 3. 〔口语〕赶快。 step it with 和…齐步。 step lively 急,赶快。 step long 大踏步走。 step off 失策;〔俚语〕结婚;〔俚语〕死。 step on it 〔口语〕赶快。 step on the gas 〔美国〕加快(汽车)马力;〔口语〕赶快。 step out 1. 走出屋外。 2. 下(车)。 3. 放大脚步。 4. 辞职。 5. 用脚步测量。 6. 〔美口〕去跳舞[玩耍、游荡]。 What I'd do is step out for a moment. 我想出去溜一溜。 step out of line 采取独立行动。 step outside 走出,走到外面。 step over 横越,跨过。 step short 【军事】缩小脚步走。 step up 走上去;〔美国〕促进,加紧;插嘴;提高;【电学】升高(电压) ( a step up transformer 升压变压器)。 step up to 接近,走近 (step up to a girl 追求,求婚。 step up to town 上城里去)。 step upstairs 上楼去。 step well together (舞伴)跳得[(马)走得]合拍。 n. 1.(脚)步。 2.梯级,阶磴儿,台阶踏板。 3.阶层,等级,升级; 〔pl.〕 梯子,楼梯。 4.一步;步调,步伐;发展,阶段。 5.脚声;足迹。 6.走路样子,步态。 7.步骤,手段,措施,办法。 8.舞步;〔口语〕跳舞。 9.【造船】桅座。 10.【机械工程】轴瓦;级,档。 11.【音乐】音级;度。 He ran down the steps. 他跑下楼梯来。 Watch your steps. 小心走路,留神脚底下。 The director will approve such steps. 处长会同意这些措施的。 We've made a big step forward in our studies. 我们在学习中前进了一大步。 Your paper marks a forward step in the research. 你的报告标志着研究工作的向前发展。 Take such steps as you think best. 按你认为最好的步骤办吧。 the last [final] step (多级火箭的)最末一级。 a step in the social scale 社会阶层中的一个阶层。 break step 【军事】走乱脚步,用平常脚步。 fall in step 顺着(…的)步调走。 get one's step 升级。 give sb. a step 给(某人)升一级。 in sb.'s steps 步人后尘。 in step 齐步。 keep step 整齐调步 (with)。 make a great step forward in 在…上有了很大进步[发展]。 make a step forward [backward] 前进[后退]一步。 miss one's step 失足。 out of step 错了步伐,弄乱步调,不按(…的)步调走。 pick one's steps 一步一步小心走,步步留心。 retrace one's steps 走回头路,改变主意,变挂。 rise a step in sb.'s opinion [estimation] 在某人的心目中升高了一步。 step by step 一步一步;切切实实。 step for step 用同样步调,并驾齐驱地。 take a bold step 采取断然处置。 take a rash step 躁急做错,弄错,失策。 take steps 设法,采取措施 (You must take steps to prevent it. 你得设法防止它)。 tread in the steps of 仿效,跟…的脚步走。 turn one's steps to [towards] 转向…走去;改变方向而从事…。 Watch one's steps! 小心走路,留心脚底下;小心行动。
This system provides pulse signal and direction signal to step motor driver by computer ’ s controlling step motor control card , and makes motor and guage ’ s pointer rotate . computer gets the micro displacement measured by grating measuring system via rs232 serial port , and acquires guage ’ s image by high precison ccd camera , then processes the guage ’ s image by software , including pre - processing , graying , binarization , thinning and hough transform , so as to recognize the position of guage ’ s pointer , finally calculates all kinds of precision on basis of algorithm established by national detecting rules of gauges 本系统通过计算机控制步进电机控制卡来给出步进电机驱动器需要的脉冲信号和方向信号,进而带动电机驱动仪表指针转动,计算机通过串口实时采集光栅测量系统的微位移信号,并且通过高精度ccd摄像机实时获取表盘图像数据,同时通过计算机软件实现表盘图像处理,包括预处理、灰度化、二值化、细化和hough变换等,最终快速识别出表盘指针的位置,并根据国家表类检定规程所制定的算法检定出指针式仪表的各种精度。
The hardware part of controlling system consists the interface circuit of cpu , the circuit of collecting process status information the driving and controlling circuit of step motor and the protect circuit when losing electric power . the software part of controlling system achieves the aim of controlling process through controlling step motors 控制系统包括硬件部分和软件部分,硬件部分主要包括与cpu的接口电路、加工状态信息的采集电路、步进电机的驱动控制电路和掉电保护电路,软件部分则主要通过控制步进电机的进给,实现加工控制的目的。
The application of motor has spread all kinds of fields of national economy and people ’ s daily life as the main mechanic - electronic energy conversion device for a century or more . the control strategy of motor has also taken great change . traditonal analog control have been replaced by digital control step by step . the digital control system made of modern ways , such as microprocessor , computer , fpga / cpld , dsp controller , has developed rapidly . pid control is often adopted in the digital control system of motor . but pid control has some scarcity , good control effects have been obtained difficultly in some instances . so the way of advanced control strategy combined with triditional pid control is adopted generally , such as pid fuzzy control , pid nerve control and so on 采用微处理器,通用计算机, fpga / cpld , dsp控制器等现代手段构成的数字控制系统得到了迅速发展。在电动机的数字控制系统中,一般采用的是pid控制,但由于pid控制有其一定的局限性,在有些场合中难以获得满意的控制效果。因此,在一些实际工业控制过程中,常常将先进的控制策略与常规的pid控制结合起来,如自适应模糊pid控制、神经元pid控制等。
An auto - detecting method of the gauge with pointer that is based on digital image processing technique , high precision grating technique and step motor control technique is presented . there are advantages of high precision , high efficiency and auto - detecting for apply digital image processing technique to detect precision of the gauge with pointer ; moreover , it ’ s helpful to improve system ’ s resolution when high precision grating technique is applied to measure micro displacement ; also it makes system more automatic to control step motor in computer via step motor control card 本文研究的指针式仪表的自动检定方法是基于数字图像处理技术、精密光栅测量技术以及步进电机控制技术的,将数字图像处理技术用于指针式仪表的检定,具有精度高、效率高、易于实现自动测量等优点;另外,将精密光栅测量技术用来测微位移,有利于提高系统的分辨率;还有,通过步进电机控制卡来实现在计算机上对步进电机的控制,提高了系统的自动化程度。
Combining quantum chemistry calculation with experimental evaluation , the activation energies of possible interfacial reaction were calculated . it is shown that the first step in which the atomic ti , c and si were decomposed from ti matrices and fiber , respectively , is a rate - controlling step because the activation energy of the step is larger than second one 量子化学计算与经验估算相结合,求出了可能发生的界面反应的活化能,表明第一步骤的活化能远大于第二步骤的活化能,因而第一步骤是反应的动力学控制因素,在这一步骤中,原子态的ti 、 si 、 c分别从基体钛合金和纤维中分解出来。