查询词典 parabolic curve

However, if you want to use the cheap production of SAT TV offset parabolas for the work on HAM or WLAN frequencies; you have to try to construct a feed that matches those parabolic reflectors.

无论如何，如果你想用一个低制作成本的卫星电视偏馈抛物面天线，工作于业余无线电频段或者WLAN波段，你必须制作一个与现有抛物面反射器相配的馈源。

Medium parabolic profile and heavy cutter density provide good penetration rates in medium to hard formations with medium compressive strength and small abrasive layers.

中等抛物线冠部和加密布齿使其在中等抗压强度并含一定研磨性的中至硬地层中获得好的钻速。

Medium parabolic profile and heavy cutter density provide good penetration rates in medium to hard formations with medium compressive strength and small abrasive layers.

中等抛物线冠部和加密布齿使其在中等抗压强度的中到硬地层以及薄研磨性夹层中能有良好的钻进速度。

Blade, large PDC cutter, parabolic profile and deep blade design.

五刀翼，大复合片切削齿，抛物线冠部，深刀翼设计。

Blade, large PDC cutter, parabolic profile and deep blade design.

使用抗回旋技术，拓宽钻头使用范围到较硬地层。

Stone-mechanical products: diamond-disc sawing machine, parabolic grinding machine, cutting machine, Profile processing machinery.

金刚石圆盘锯石机、磨抛机、切断机、异型材加工机械。

Conjugate gradient method, the use of Newtons law or the use of parabolic interpolation.

共轭梯度法，使用牛顿法或者使用抛物线插值法。

With the abstract theory for parabolic differential equations in Banach spaces, the free boundary problem is locally well-posed in little Hlder spaces is proved.

利用Banach空间中抛物方程的抽象理论证明此问题在little Hlder空间是局部适定的。

In chapter 4,we have proposed a semi-parabolic quantum wellmodel and studied the third-order optical nonlinearities.

在第四章，采用与第二章相同的方法，研究了GaAs/AlxGa1-xAs半抛物量子阱中的三阶非线性光学效应—三次谐波产生。

Its span 12.8 meters, the telescope tube diameter 4.27 meters, the weight 11 tons, by three major part are composed, the first part is the opticator, the second part is the scientific instrument, the third part is the servosystem, including two lengths 11.8 meters, the width 2.3 meters, can provide 2.4 kilowatts powers the solar cell windsurfboards, two the parabolic antenna which use with the ground communication.

它全长12.8米，镜筒直径4.27米，重11吨，由三大部分组成，第一部分是光学部分，第二部分是科学仪器，第三部分是辅助系统，包括两个长11.8米，宽2.3米，能提供2.4千瓦功率的太阳电池帆板，两个与地面通讯用的抛物面天线。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48