|
By means of the rectangular d iaphragm and two orthogonal cylinder lens, the collimated laser is shaped, which is stretched and compressed respectively in two different directions, and the l ine source with ideal shape is achieved.
|
|
|
并应用矩形光阑和两个相互垂直放置的柱面镜，对准直后的激光束进行整形，分别在不同的方向进行拉伸和压缩，得到了形状理想的线光源。 |
|
By means of the state space model of variations propagation, the objective function was built and genetic algorithm was applied for the optimization of sensors' coordinates.
|
|
|
该方法利用薄板装配偏差流传递的状态空间模型确定优化设计的目标函数，采用遗传算法实现测点在多工位间坐标位置的优化设计。 |
|
By means of the theoretical deduction, It was explained that liquid drops could be formed, when the surface tension and weight is same as the cohesive force of liquid.
|
|
|
摘要通过理论推导，说明在一定条件下，金属液流在其表面张力、重力和与此重力相应的液流柱内聚力相平衡时，可形成体积与金属液流自由下落出流孔径有关的液滴。 |
|
By means of the transformation from the focal coordinate system to the observation system, we obtained the external normal vector of the focal fault plane expressed in its observation system, and obtained the macrodamage degree of the researched block, wh
|
|
|
由震源坐标系表示的震源断层面换算到观测坐标系得到其外法向矢量，可求得研究地块以地震裂纹密度张量计算的宏观损伤度的变化。 |
|
By means of the trend prediction analyses with the neural network based expert system and the artificial intelligent prescient maintenance system, automatic online judging and fault forecasting to the conditions of the waterflooding power package can be a
|
|
|
系统采用基于神经网络的专家系统进行趋势预测分析及人工智能预知维护系统进行判别决策的方法，实现了对注水机组状态的自动在线判断和故障预报。 |
|
By means of theoretical analysis and field testing of the anti-split effect of prestressed building floor slabs, it was illustrated that the technique of prestressing was very effective for dealing with the anti-splitting problem in super-length structure
|
|
|
通过对预应力楼盖的抗裂效果的理论与现场实测分析，说明利用预应力技术解决超长结构的抗裂问题是非常有效的。 |
|
By means of this, the engine can be started.
|
|
|
发动机借助这种办法启动。 |
|
By means of two-way radio communication called telemetry, or remote control, one can send wavelengths round trip to a brain transmitter in a person's head.
|
|
|
依靠双向的无线电波传输的方式，叫做遥感勘测，或远程控制，一个能传送波长往返从一个人的头脑里到传输器。 |
|
By means of variable frequency and adjustable speed, the variable air volume air conditioning automatic control system saves energy through setting different static pressure values in different time periods.
|
|
|
变风量空调控制系统以变频调速为手段，分时段设定静压值以实现节能。 |
|
By means of variational structure and Z2 group index theory, we obtain multiple solutions of boundary value problems for second-order ordinary differential equations and lower bound estimate for number of the solutions.
|
|
|
摘要本文利用变分原理和Z2不变群指标研究了一类二阶常微分方程奇异边值问题的多重解，得出了这类解个数的下界估计。 |
|
By measuring goaf gas concentration distribution in 3205 working face of Taopinggou coal mine, we initially identified gas concentration distribution rules in coaf of room and pillar working face, therefore provided scientific basis to prevent and cure ga
|
|
|
摘要通过对桃坪沟煤矿3205回采工作面采空区瓦斯浓度分布的实际测定，初步查明了房柱式回采工作面采空区瓦斯浓度的分布规律，为今后此类工作面采空区瓦斯防治、防止采空区瓦斯事故的发生提供了科学依据。 |
