难点

The absolute emission intensities of atomic hydrogen Balmer lines and Ar-750.4 nm as a function of gas flo...

因此，对氢原子浓度的原位诊断是研究和改进上述等离子体工艺过程的重点也是难点之一。

The teaching contents and teaching purposes are determined by the cultural aims and professional qualities, the teaching media are befittingly chosen depended on teaching contents and student's characteristics, the keystones and difficulties of class teaching are broken through by selecting the cut-in points of applying modern educational technology, the shortages of facilities are supplied by applying modern educational technology to create the simulative situations, the level of applications are increasingly improved by means of receiving student's feedbacks, all of which are discussed so that expatiate how to apply modern educational technology to planting courses.

从根据培养目标和岗位能力确定教学内容，设计教学目标；根据教学内容和学生的特点选择适宜的教学媒体；找准应用现代教学媒体的切入点，突破课堂教学的重点、难点；运用现代教育技术创设实践教学情境补充设施条件的不足；及时掌握学生的反馈，不断提高应用水平等几个方面进行阐述，对种植类专业课教学中应用现代教育技术的策略做了一些探讨。

Beijing Duck is one of our specialties, and it??

因此它在考试中是一个难点。

Belly tank. Qualification issues include design and testing required to maintain the combat capabilities of the UH-60 Black Hawk and the safe flight envelope of the aircraft with the tank.

该机的设计难点在于用户要求既要保持UH-60原有的攻击运输能力，又要在携带外部大型水箱的情况下保持飞行安全。

I get to not hunter asurfaceg the beside question: Why is it varicapable to you?

我禁不住又问了唯一重难点型：为啥你不相同？

In chapter 3, the author considers that approximate value of Bessel fuctions and transcendental equations are main ob stacle to realize computer simulation for isolated well principle. The character of Bessel functions are studied, new approximate values of Bessel function are set forth.

第3章中，针对"割离井法"微机实现的难点——贝塞尔函数的渐近计算和超越方程的合理求解，研究了贝塞尔函数的性质，提出了新的贝塞尔函数的渐近式，并采用ZEROIN法完成了超越方程的求解，最后编制出新的"割离井法"计算程序。

This paper proposes an algorithm named Small Sample Incremental Biased Learning Algorithm to solve three difficulties of relevance feedback in sketch retrieval, including small sample issue, asymmetry of training data and real-time requirement.

为了解决草图检索相关反馈中小样本训练、数据不对称及实时性要求这3个难点问题，提出了一种小样本增量有偏学习算法。

Based on deep understanding on the relation between the properties of biconical fibers and the fusion temperature, a problem of fusion temperature monitoring is solved by means of a ceramic microheater and a fiber pyrometer. Effects of the fusion temperature on optical properties of biconical fibers are studied quantitatively. Biconical fiber devices with various filtering spectra are fabricated. Experimental results agree well with theoretical predictions.

根据对双锥光纤成形及光学特性与加热温度的深入理解，采用陶瓷管辐射加热和光纤高温传感新技术，解决了长期以来熔锥温度不易监测的关键技术难点，定量研究了熔锥温度对双锥光纤光学特性的影响，研制出多种具有不同滤波谱形状的双锥光纤器件，实验与理论模型预测的结果一致。

The problem of bidirectional text is also a hotspot in the field of text internationalization.

双向文本问题也是国际化文字处理领域讨论的热点、难点。

Singular bilinear system, different from a linear singular system, is a kind of nonlinear singular system. Control theories and applications of nonlinear systems have always been a hot research focus due to their potentials.

广义双线性系统是最接近广义线性系统的一类广义非线性系统，非线性系统的理论分析与应用一直是控制领域研究的热点与难点。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。