負透鏡 的英文怎麼說
中文拼音 [fùtòujìng]
負透鏡
英文
minus lenses-
We introduce a negative lens which will diverge the rays a bit.
我們用一塊負透鏡，它將使光線發散一些。In the retrofocus project, a retrofocus structure with two elements is used in the object lens to enlarge fov and back working distance, in the head of which the negative meniscus have the effect of balancing aberration and deviating rays like a prism. and a standard hyperhemisphere immersion lens with high refractive index is put behind the object lens to satisfy the receiving of a detector with smaller photosensitive
反遠距設計方案中物鏡採用二片式反遠距結構，增大了視場和后工作距離，彎月型負透鏡在前，具有平衡像差和棱鏡的偏向作用;物鏡後放置高折射率標準超半球型浸沒透鏡，滿足小光敏面探測器接收。The content of the sap is negatively stained by uranyl acetate and observed by tem. results show consistency with the published observation that particles in gcv of open stomata are increased enormously in distribution density with obviously diminished small volume
研究內容分以下三個部分： a ）用玻璃毛細管從開放態及aba誘導的關閉態保衛細胞液泡中直接取樣，並將樣品滴放在formvar包裹的銅網上，經醋酸鈾負染后在透射電鏡下觀察。Standard test method for microvacuum sampling and indirect analysis of dust by transmission electron microscopy for asbestos structure number surface loading
用石棉結構值表面負荷用透射電子顯微鏡對塵埃微真空取樣和間接分析的標準試驗方法We analyze the positive and negative lens effect caused by the hole theoretically and give the expression of normalized transmittance in this condition
本文從理論上分析了因孔洞而產生的正透鏡或負透鏡效應並給出了歸一化透過率的表達式。When the laser beam interacts with the plasma, the effect of plasma on laser beam welding is mainly embodied, for example : the reflection, the scatter, the absorption, and the heat lens effect of the plasma acting on the laser beam and so on
等離子體對激光焊接物理過程及其質量的影響主要體現在等離子體與激光束之間的一系列相互作用上，如：等離子體對入射激光的反射、散射，等離子體對入射激光的負透鏡效應，等離子體對激光能量的吸收，等離子體的反沖力效應，等離子體熱源效應等。Originally from green concrete and concreting in minus - temperature, the critical strength of frozen injury of minus - temperature calcium - enriched fly ash concrete and the rule of strength development are studied in this paper. through the test of resistance of freezing - thawing cycles and chloride diffusivity, the influence of curing system and calcium - enriched fly ash on the performance of concrete are studied ; and through the modern methods ( xrd, sem, and so on ), the hydration products, pore structures and microstructure are studied
本文既著眼于綠色混凝土，又致力於混凝土的負溫施工，研究了增鈣粉煤灰混凝土的抗凍臨界強度及其負溫抗壓強度發展規律;通過快凍試驗和氯離子滲透試驗，研究養護制度和增鈣粉煤灰摻合料對混凝土耐久性能的影響;並通過光學顯微鏡法、掃描電鏡和xrd等現代分析方法，研究負溫增鈣粉煤灰混凝土的水化產物、孔結構和顯微結構。分享友人