查询词典 concave function

Methods Hypermetropia and myopia were induced by playing concave and convex lens in front of eyes of 32 subjects.

在正常眼前放置正、负球镜，人工诱导单纯性远视、近视性屈光参差。

An approach is proposed, which emphasizes the importance of concave lens which can scatter the laser and make it an ideal signal source to be captured by the CCD lens. Thus, the measurement would be more precise, taking full advantage of the laser.

本文提出以凹透镜散射法将待测光源转化为镜头可以直接捕捉的理想光源，从而大大提高了点的测量精度，充分利用了激光作为信号源所体现的优势。

Just as a double convex lens enlarges, so a double concave lens reduces.

正象双凸透镜可以放大那样，双凹透镜也可以缩小。

Some are flared—that is, thicker at the rim than in the center, like a concave lens.

有些呈喇叭形──即边缘较中心厚，类似凹透镜。

The participants were fifth grade students and they were divided into high score group, middle score group, and low score group according to their achievement in the learning area of science and technology. There were two learning projects in two periods of experimental instruction with different participants: the first project was concave and convex lens and the second project was the investigation of sound and create instrument.

研究对象为国小五年级学生，以学生的自然与生活科技学习成就，将学生分为高分群、中分群、低分群，进行不同研究对象的二阶段实验教学，其学习主题：第一阶段为「凹透镜与凸透镜」，第二阶段为「声音的探讨与乐器制作」。

At last, guided by the theoretical calculation mentioned above, a series of experiments were carried out. The wavefront distortion of a plano concave lens was measured. The total error was less then 8%. This certified the measured results of the interferometer. The wavefront distortion of a one-side pumped zigzag slab gain medium in different pumping power was measured.

最后，在上述理论计算的指导下，进行了一系列波前检测实验：对一个焦距已知的平凹透镜所产生的波前畸变进行了检测，总的测量的误差小于8%，验证了系统测量结果的准确性；测量了一个单侧泵浦的之字形板条增益介质，在不同泵浦功率下的波前畸变情况。

After the first spacer is in place and dry, place the concave side of the objective lens flush against it, and put the other spacer snugly against the lens to hold it in place (again using the drill - glue method).

在第一次间隔到位，干燥，放置在物镜反对冲凹侧，并提出对镜头的其他间隔紧贴举行的地方。

Construct a ray diagram to locate the image formed by concave lens.

完成下图并找出影像

One slightly concave cylindrical lens combination is used to change one laser beam into small sector in small angle, and one reflector projects the laser beam to prism driven by a motor to rotate in high speed to produce one reciprocating and scanning small sector plane.

采用微凹柱面透镜组将激光光源发射的一束激光拉成具有微小夹角的小扇面，利用反射镜将此激光束透射到由电机驱动的高速旋转多面棱体上，使激光束产生一个小扇形往复激光扫描光平面。

It utilized a concave lens to reflect the incident light in lithography process and controls the exposure dosage in photoresist. Micro-pyramid array in photoresist is then developed onto the substrate.

利用凹透镜改变曝光机入射光的角度，控制曝光剂量於光阻中，以成型出四角锥柱微结构，并将其应用在导光板制造技术上。

As a dominant party,CPC government should play a guardian,supervisee and guarantee role to overcome all the difficulties in the development of charitable cause and bring it into full play in the establishment of harmonious society on policies and regulations basis.

在中国共产党的文献中第一次把发展慈善事业提到&最广泛最充分地调动一切积极因素，不断提高构建社会主义和谐社会的能力&的高度来认识。近年来，社会学界对慈善事业的理论专著发表较多，有鉴于此，笔者不揣浅陋，谈谈自己的认识和见解。

Flow through the land, the land of the scale of operation allows the effectiveness of the land may be raised.

通过土地的流转，土地的规模经营可以让土地的效益得到提升。