未知

Chapter 1 gives a brief introduction to basic contents and methods of system identification and solutions of certain prob— lems met during the process of identificationIn chapter 2, the identification is accomplished by transforming the linear differential equation of a dynamic system into an algebraic form via block pulse functions .

第二章介绍采用正交函数BPF将含有未知参数的系统线性微分方程转化为代数向量方程求解，获取表征系统特性的传递函数或微分方程参数而达到辨识目的。

The finite difference is used to approximate differential operation; the reflectance map equation described by the first order nonlinear differential equation is transformed into an algebraic equation about the unknown surface heights, and then the objective equation is constructed by the reflectance map equation and gradient information of image. Moreover, the Newton iterative algorithm is utilized to obtain the numerical solution and 3D shape of the surface.

采用有限差分近似微分运算，将一阶非线性微分方程所描述的反射图方程转化为关于未知表面高度的代数方程，再由反射图方程和图像梯度信息构造目标方程，进而用Newton迭代算法求出该方程的数值解，得到表面三维形状。

An alien-like squid with "elbows" is caught on video, the world's biggest atom smasher fires up, and unknown "structures" are detected tugging at our universe, and more.

一条被摄像机拍到的酷似外星人的用"肘"运动的乌贼，世界最大的粒子加速器开始工作，未知"结构"被发现牵引我们的宇宙，等等。

A mile and a half underwater, this alien-like, long-armed, and--strangest of all--"elbowed" Magnapinna squid is seen in a still from a video clip obtained by National Geographic News from and published on Nov.

排在第七位的是这种在深海钻井下找到的外形类似鱿鱼的海洋生物，这种生活在2500米深海中的海洋生物有着长长的"胳膊"，对科学家来说尚属未知生物。

Our unknown future is secure in the hands of our all-knowing God.

在全知的上帝手中，未知的未来最稳妥。

Never be afraid to entrust the unknown future to the all-knowing God.

放心把未知的将来，交托给那全知的天父。

In all cases, the use of alternative psoriasis medicine should be used with caution due to possible unknown side effects.

在所有情况下，替代性银屑病药物的使用，应谨慎使用，因为可能的未知的副作用。

He wishes that through the four weeks residency program, he could play a part in local community activities and explore local culture deeply. Yeo wishes that by searching the "unknown" cultural elements of his knowledge and exploring local daily "functional objects", his artistic vision could offer an alternative proposition/experience profoundly.

透过四周的驻村计画，他希望能进一步参与在地社区活动以探索在地文化，并希望藉著对未知文化元素及在地日常功能物件的探寻，为其艺术视野开拓不同的观点与经验。

The biology of land base world is put in the wisdom with terrible move and amaranthine vitality, they are different from the biology on the ground, dark burrow is additional they are had exceed strong vitality, nobody know how to seek this uncharted territory, but this burrow, if do not have companion photograph to follow, you cannot take a risk ahead absolutely.

地底世界的生物存在着可怕的智慧以及不死的生命力，他们不同于地上的生物，阴暗的洞穴另他们拥有超强的生命力，无人知道如何去探寻这片未知的领域，但这个洞穴，若没有同伴相随，你绝对无法向前冒险。

In this method, a constant voltage source is placed in series with the unknown resistor and an ammeter.

在此方法中，恒压源与未知电阻和安培计相串联。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。