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This invention relates to MIMO test method in a multi-user MIMO radio communication system including: estimating the channel matrixes of all users at the base station, computing an orthogonal projecting matrix M of the interference matrix of each user and transmitting M to each user periodically, receiving data sent by the base station at the user end and getting the orthogonal projecting matrix M from the received data, transforming the MIMO test of a desired user to the minimum value of a K-element secondary convex function, in which, K expresses the number of sending antennas and getting estimation of the test data by a ball test method.

一种多用户多输入多输出无线通信系统中的MIMO检测方法，包括步骤：在基站估计所有用户的信道矩阵；计算每个用户的干扰用户矩阵的正交投影矩阵M，并将每个用户的正交投影矩阵M定期发送给每个用户；在用户端接收基站发送的数据，并从接收的数据中得到正交投影矩阵M；利用正交投影矩阵M将期望用户的MIMO检测转化为K元二次凸函数的极小值，其中K表示对期望用户而言，发送天线的个数；利用球检测的方法，得到检测数据的估计。

In the analysis of dynamics cutting angle, the following phenomenon is discovered first time: the minimize of dynamics clearance angle is not monotone decreasing with the vibration frequency , and appear peak value periodically, which exist is the disseparation region and approach the separation region.

在对振动钻削中切削刃上各点的动态角度的分析中，首次发现在振动钻削过程中动态后角的最小值不是随着频率或频转比的增大单调下降，而是周期性的出现波峰值，这些波峰值都出现在不分离区，而且是接近于分离区处，这是由振动钻削过程中的变速特性引起的。

Like your PC, it needs to communicate with the mother ship periodically.

就好像你的电脑一样，它需要定期的和母舰进行沟通。

An appliance for cooking food includes a receptacle for receiving a quantity of food articles to be cooked, and a sufficient quantity of cooking liquid to only partially immerse the food articles therein; a heater for heating the cooking liquid and the food articles when received therein; a paddle movably mounted with respect to the receptacle so as to be movable therein; and a periodically-reversing drive for driving the paddle back and forth in the receptacle to move the food articles therein back and forth through the cooking liquid.

一种烹调食品的装置，该装置包括：一个用于放置大量待烹调食品和足量烹调液体的容器(10)，所述食品只是部分浸在液体中；一个在装了烹调液体和食品以后对烹调液体和食品进行加热的加热器(14)；一个相对于所述容器可活动安装的叶片(15)，使得该叶片在容器中运动；以及一个定时进行翻转的驱动器，该驱动器带动叶片在所述容器中前后运动，使容器中的食品前后运动通过烹调液体。

At 4 h, 1 d and 2 d after poisoned by mustard gas, the suspended bone marrow cells (106 cells per time) were injected into mice respectively. After poisoned 3, 5, 7 and 10 d, the numbers of leukocyte and marrow nucleated cells were recorded periodically.

染毒后4h、第1天和第2天3次尾静脉输注雄性小鼠骨髓细胞悬液（每次约1×10^6细胞），染毒后第3，5，7和10天取血和股骨，计数外周血白细胞和骨髓有核细胞。

Therefore, it's prudent to measure the insulation resistance of the test fixtures and cables periodically with an electrometer ohmmeter to ensure their integrity.

因此谨慎的做法是定期地用静电计欧姆计来测量测试夹具和电缆的绝缘电阻，以保证其完整性。

In a word, the Antarctic sea ice had not obviously decreased with global climate warming, but periodically changes, adjusts and restricts according to opposite phase variation rule in the eastern and western Antarctic.

南极海冰没有随着全球气候温暖化而明显减少，而是按照东南极和西南极反相的变化规律进行周期性的变化、调整和制约。

The overpayment risk surfaces periodically and, in our opinion, may now

我个人的看法，像现在的时机买任何股票就都有可能必须承担这样的风险，当然也包

And the second one is that overproduction may break out periodically in the future.

第二，生产过剩危机将可能周期性发作。

Periodically crash is the market correction to the overvaluation; and the market rally will bring the price out of the bottom.

周期性的崩溃是市场对价格过高的纠正，同样市场也会从低价的谷底走出来。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了