同时也是，矢量相减的原理。
subtract：两个数相减并返回结果。
这是一个有符号整型，是两个指针相减后的结果。
A signed integer type that results from subtracting two Pointers.
他毫不迟疑地进行了文字系数项的相减。
He did not hesitate to subtract terms with literal coefficients.
采用多次曝光技术，提高了相减象的质量。
The quality of the subtraction image is improved by the multi exposure.
本文论述一种实时图像相减的原理和方法。
The basic principle and some useful methods of real-time image subtraction are described in this paper.
讨论了一种基于传统谱相减算法的改进方法。
In this paper, an improved voice quality enhancement algorithm based on traditional spectrum subtraction method is discussed.
当一个时间戳与另外一个相减时，结果是两个时间戳的持续时间。
When timestamps are subtracted from one another, the result is a timestamp duration.
提出一种使用功率谱相减的实时联合变换相关器作多目标检测。
Multitarget detection using a real time joint transform correlator with power spectrum subtraction is proposed.
比如，假设要对两个时间对象进行相减来求二者之间的持续时间。
For example, imagine subtracting two Times to find the duration between them.
其次，我们从前面可以看到，指针可以和整数进行相加或相减运算。
Second, we have already observed that a pointer and an integer may be added or subtracted.
将原始图像与背景图像相减，获得背景平坦、缺陷突出的差值图像；
Then, the filtered image was subtracted from the raw image and a difference image with flat background and outstanding defects was obtained.
本文论述了利用数字相减处理技术增强血管造影X线影象的基本原理。
This paper discusses the fundamentals of applying digital subtractive processing technique in intensifying images obtained by X-ray vascular angiography.
股本增加额为该企业年末、年初资产负债表“股本”项目相减之差。
The increased amount of equity capital is the balance between the "equity capital" entries of the indebtedness statements at the beginning or the year and the end of the year.
利用光栅作为滤波器，在相干光处理系统中可对字符进行相加和相减。
The addition and subtraction of characters can be performed in a coherent optical processing system if a grating is used as a filter.
本文提出了一种基于背景相减法和对称差分法来进行运动目标检测的方法。
A novel moving object detection based on adaptive background subtraction and symmetrical differencing is presented in this paper.
那么，如果我们想要比较它们，我们应该把它们相减，用S1的通量积分减掉s2的通量积分。
So, if we want to compare them, we should probably subtract them from each other. OK, so let's do the flux integral for S1 minus the flux integral for S2 of the same thing.
为此给出一种阵列抗串扰自适应噪声抵消方法，并将其与改进的谱相减技术相结合。
An array crosstalk resistant adaptive noise cancellation method is therefore presented. And then an improved spectral subtraction algorithm is further cascaded to obtain better enhancement results.
在去噪算法上本文重点比较了谱相减法、LOGSTSA-MMSE与子空间方法。
The comparison of threes methods, spectral subtraction, LOGSTSA-MMSE and subspace approach, is the major work in researching the noise reduction algorithm.
算法提高了谱减法的适用范围，还在一般谱相减方法的基础上提出了改进的谱相减算法。
The application range of the spectral subtraction is expanded by the new noise estimation method.
算法提高了谱减法的适用范围，还在一般谱相减方法的基础上提出了改进的谱相减算法。
An improved non-linear spectral subtraction algorithm is also put forward. The application range of the spectral subtraction is expanded by the new noise estimation method.
比较故障线路和正常线路波形，使两波形相减，利用波形差第一个畸变点来确定故障距离。
Contrasting the waves reflected from the fault line and the normal one, and subtracting this two waveforms, then the fault distance is determined by finding the first distortion point.
实验结果表明，噪声残差消除谱相减法明显地削弱了一般谱相减法所带来的“音乐”噪声。
The experiment results show that this improved method weakens the "music" noise distinctly. Whats more, it notably improves the quality of noisy speech.
所谓负反馈是指输出信号的一部分被送回输入端，与输入信号相减，从而削弱了有效输入信号。
Negative feedback occurs when a portion of the output signal of an amplifier is fed back and subtracted from the input signal, causing a reduction in the effective input signal.
尤其通过中间和侧面前额皮质大脑活动，研究者能判断志愿者做数学题时是决定将两个数字相加还是相减。
Specifically, the researchers determined whether a volunteer decided to add or subtract two numbers in a math exercise from patterns of brain activity in the medial and lateral prefrontal cortex.
在结构元尺寸的确定方面，提出了线灰度分布曲线拟合并相减，再搜索相减结果最大值的方法。
The method of curve fitting and searching the maximum value of subtraction results was put forward to determine the size of structural elements.
本文研究了背景相减算法、差分法、基于光流场的运动估计和基于主动形状模型的目标跟踪算法。
In the thesis, the algorithm of background subtracting, frame difference algorithm, motion estimation based on optical flow field and object tracking based on active shape contour are investigated.
置一位相光栅于相干光学处理系统频谱平面，利用其零级与一级衍射光的相干迭加实现图象相减。
With a phase grating located at Fourier frequency plane, optical image subtraction is obtained as a result of the coherent superposition of the zeroth and the first order of the diffracted light.
发明对数是为了简化繁琐的计算，因为用幂指数的相加或相减可以等同于它们的基数的相乘或相除。
Logarithms were invented to simplify cumbersome calculations, since exponents can be added or subtracted to multiply or divide their bases.
将重心的实际位置与理论位置相减，得到偏差量，将此偏差量消除系统误差，传给望远镜控制系统。
The error between the actual position and the theoretic position will be gotten and feed back the control computer.
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