零分

This paper researches linear maps preserving orthogonality,obtains the linear maps preserving othrogonality,it is either a rank -declining or rank -keeping map or a map with nilpotent element in its codomain.

利用分块成向量的方法证明了MnMn(F为域F上所有n×n矩阵构成的乘法半群上的n×n拟正交矩阵组至多含有n个矩阵，利用方程组的解的理论证明了Mn中与给定矩阵A构成两两拟正交矩阵组的矩阵个数不超过n-Rank+1，从而得到Mn上保持拟正交性的线性映射φ要么是降秩的或者保秩的映射，要么φ的值域中含有幂零元。

In this paper we investigate the dynamical properties of continuous mapson a class of hereditarily decomposable chainable continua and the structure ofthe inverse limit space using a piecewise monotone continuous map with zerotopological entropy on a finite graph as a single bonding map.

本文研究了一类遗传可分可链连续统上连续自映射的动力性质并且对有限图上逐段单调且具有零拓扑熵的连续自映射的逆极限空间的拓扑结构进行了较为细致的刻画。

A determinant whose only nonzero elements occur in square blocks centered about the principal diagonal is in block- diagonal form.

仅有的非零元素集中于主对角线的方块中的行列式是分块对角形式的。

This approach applies a zero input differential voltage and overcomes the interactions between V OL and V OS —making it easy to use on the production line.

这种方法适用于一零输入差分电压和克服这是由V和V 操作系统职等的相互作用，从而易于使用的生产线。

Thus to summarize, one cannot "directly" use an output voltage measurement with zero input differential voltage to calibrate the input V OS .

因此，要总结，不能"直接"使用零输入差分电压的输出电压测量校准输入的 V OS。

Finally, accurate measurements close to a zero input differential voltage are still not achieved because V OL limitations will cause errors at small sense voltages.

最后，精确的测量接近零输入差分电压仍然没有实现因为V 职等限制，将导致在检测电压误差小。

This effectively translates the output voltage measurements by 1.5V, so a zero input differential voltage will output 1.5V ±V OS -induced errors.

这有效地转换了1.5V的输出电压测量，所以零输入差分电压输出1.5V的±的 V OS引起的误差。

The manufacturer, one among tens of thousands churning out product 24/7 in China's humming coast-al cities, will fill an order bound for the United States, take payment in American dollars and add a 12th zero to Beijing's foreign reserve—pushing the tally over the $1 trillion mark.

某制造商，在中国沿海城市不分昼夜生产商品的数十万中的一家，将为美国的订单生产，接受美元付款，并给中国外汇储备后加上12个零，将外汇总量突破一兆的标杆。

He spent 10 years in observing the gnomon of 8 "chi" and obtained a precession of the equinoxes of only one degree every 45 years and 11 months.

他花10年的观察8教程"智"，并获得了岁差的分点只有一个度每45年零11个月。

Unlike the previous method, however, the proposed algorithm obtains the new transformed matrix by taking the conjugate operation to the forward and backward spatial smoothing covariance matrix of the received data, so that the modified covariance differencing matrix which is a Hermitian matrix of zero real part can lower the computation load effectively during the eigenvalue decomposition.

不同于以前的算法，提出的算法通过对接收数据的前后向空间平滑协方差矩阵进行共轭运算得到新的变换矩阵，因此修正后的协方差差分矩阵是个实部为零的厄米特矩阵，从而有效地降低了特征分解过程的计算量。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。