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- optical tube length 光管长度
- Use a tube length of at least 42 inches. 采用管道长度至少为42英寸。
- New CCD refracting objective of a short tube length with a long working distance on microscope is suggested and analyzed in detail.Data and results of optical design on this objective are given. 提出一种新型的长工作距离短镜筒透射式的CCD显微物镜,并作了详细地分析,给出该系统的光学设计结果和数据。
- Calyx tube length and expand, there is amaranthine vitta anything resembling a tendon or vein on the canister. 萼筒长而膨大,筒上有紫红色条筋。
- The design of turbulator air preheater with finned tube and that with optic tube as well as its application in petrochemical works were recommended. 介绍了扰流子翅片管空气预热器及光管扰流子空气预热器的设计以及在石油化工厂中的应用情况。
- With increasing tube length the WSS decreases first and then gets even, and thus ending the developing region. 在进口段壁面切应力随管长先减少然后逐渐趋于平稳，达到准充分发展状态。
- Development and test of tubing length intelligent measurer. 油管长度智能计量仪的研制与试验。
- The shortest possible tube length is 520 mm with the extension tube removed, while the standard tube length during visual observing is 845 mm. 最短的可能长度用被移动的延长管是520毫米而标准的全长在目视观察期间是845毫米。
- Nothing can be done if the optical tube is not perpendicular to the declination axis or if the R.A. and Dec axes are not perpendicular, because these problems are next to impossible to fix. 但没有避光学镜筒没有垂直于赤纬轴，或是赤纬轴与赤经轴没有互相垂直更糟的情况，因为这需问题会导致根本无法固定住要观测的目标。
- According to the problems such as total heat exchanger selection , outside unit capacity determination , refrigerant tube length correction, construction control in VRF air condition system design . 围绕商用多联机空调系统设计中存在的全热交换器选择、外机容量的确定、冷媒管长的修正、系统施工安装控制等问题,剖析了产生这些问题的原因,并探讨了解决问题的对策。
- In such wells, the buckling critical load tends to be a constant with the increase of tubing length. 在水平井眼中，随着连续油管长度的增加，其临界失稳载荷趋于一个常数。
- According to the practical requirement,a continuative tubing length measuring device is developed. 根据油田井下作业的实际需要,研制了一种油管长度在线连续测量仪。
- self-standardized micro-flat optical tube 自准测微平光管
- The result of the simulation test shows tha the tubing length intelligent measurer runs well with high accuracy. 模拟试验结果表明，这种油管长度计量仪测量原理可行，测量精度可达1‰。
- The effects of deviation angle, annular tolerance, tubing length and friction factors on the stability of tubing in horizontal well are discussed. 讨论了井斜角、环空间隙、管柱长度和摩擦系数对连续油管在水平井中稳定性的影响。
- A tubing length intelligent measurer was developed in the light of low measuring accuracy,high labor intensity and low efficiency of manual measuring. 针对油管长度人工计量方法存在的计量精度差、工人劳动强度大、生产效率低等问题，研制了以单片微机为核心的油管长度智能计量仪。
- According to the characteristic of running tubings, this measurer adopted an indirect method to realize intelligent online measurement of tubing length. 根据油管下放过程的特点,采用间接测量方法实现油管长度的在线智能测量。
- His optic nerve was hurt in an accident. 他的视神经在一次事故中受到损伤。
- THE ERROR ANALYSIS IN MEASURING GHE FOCAL LENGTH OF THE LENS BY PARALLEL OPTICAL TUBE 平行光管测透镜焦距中的误差分析
- Microscopes and telescopes are optical instruments. 望远镜和显微镜是光学仪器。
