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focusing     
相关语句
  聚焦
     A BOUNDARY VALUE PROBLEM FOR THE PERIODIC BRILLOUIN FOCUSING SYSTEM
     关于周期性Brillouin电子束聚焦系统的一个边值问题
短句来源
     A SIMPLIFIED 180°FOCUSING β RAY SPECTROMETER
     简易180°聚焦β谱仪
短句来源
     DIFFRACTION GEOMETRY OF MONOCHROMATIC X RAY QUADRUPLE FOCUSING CAMERA
     X射线单色四重聚焦照相机单色器的衍射几何
短句来源
     Laser line focusing lens
     激光直线聚焦
短句来源
     NONLINEAR DIFFERENTIAL EQUATIONS IN ELECTRON BEAM FOCUSING THEORY(Ⅱ)
     电子注聚焦理论中所出现的非线性微分方程(Ⅱ)
短句来源
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  调焦
     The system has realized ±0.1μm(3σ) repeat positioning accuracy in three directions of X,Y 1 and Y 2 ,±50nm focusing resolution and 5μm leveling accuracy for the whole wafer.
     本系统在X、Y1、Y2三个方向达到了±0.1μm(3σ)的重复定位精度、±50nm的调焦分辨力和5μm/全片的调平精度。
短句来源
     Research of F/39 Optical System Automatic Focusing Technology Based on Surface Target
     基于面源信息的F/39光路自动调焦技术研究
短句来源
     The experiments show that the automatic focusing range of the system has been enlarged to +/-150靘, automatic focusing accuracy +/-0.3靘 and focusing time 4-8 seconds.
     实验表明本系统自动调焦范围扩大到150m,自动调焦精度为0.3m,调焦时间为4-8s。
短句来源
     Auto focusing technique is an important method to improve the precision of microscope.
     自动调焦技术是提高显微镜测量精度的重要手段,本文介绍了采用图像处理法实现显微镜自动调焦的方法。
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     GFP Automatic Focusing Grating Dynamic Photolithographing Head System
     GFP自动调焦光栅动态光刻头系统
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  聚焦的
     Elemental analysis based on the emission from plasma generated by focusing a powerful laser beam on any material surface is known as laser-induced breakdown spectroscopy (LIBS).
     利用聚焦的强激光束入射物体表面产生激光等离子体,对等离子体中原子和离子发射谱进行元素分析,这一过程叫做激光诱导击穿光谱(Laser-Induced Breakdown Spectroscopy),简称LIBS。
短句来源
     The highly efficient allsolidstate 355 nm ultraviolet pulse laser was obtained by means of long focusing.
     利用长聚焦的方法实现了高效全固体355nm紫外脉冲激光输出。
短句来源
     A microhole of bore diameter 25~30μm has been drilled by using a telescope to enlarge the beem diameter of TEM00-mode YAG laser pulses and focusing these pulses.
     利用TEM00模激光脉冲和望远镜扩束后再聚焦的办法,加工出孔径25~30mm的微孔。
短句来源
     There are six parameters, i.e. the wavelength ratio of the pump beam to the signal, the initial amplitudes of a pump beam and a signal beam, the initial separation between the beams' centers, and the ratio of the initial beam width of the X and Y of the pump to that of the signal, which influence the induced focusing of the signal optical beam.
     通过数值计算讨论了在不同初始抽运光束振幅、初始光束间距和波长比情况下椭圆高斯光束对信号光束聚焦的影响。 影响光束聚焦过程的方程参量和初始条件共有6个,即两光束波长比(方程参量)、抽运光束和信号光束的初始振幅、两光束初始中心间距和两光束X、Y初始束宽比。
短句来源
     Enterprise Evaluate Innovation——from Performance Evaluation to Strategic Focusing Value Management
     企业评价创新——从绩效评估到基于战略聚焦的价值管理
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  对焦
     An Automatic Focusing System Based on USB Video Camera
     基于USB Video Camera的自动对焦系统
短句来源
     Study on Automatic Focusing Technique Based on Planar Array CCD for Aerial Camera
     面阵CCD航空相机的自动对焦技术研究
短句来源
     (2) the automatic focusing system and the track tracing system;
     (2)自动对焦系统和轨道跟踪系统;
短句来源
     An automatic focusing system applied in USB video camera is introduced.
     介绍一种应用于USB video camera中的自动对焦系统。
短句来源
     Practical examples demonstrate that the focusing efficiency and reliability can be improved with time consumption of 10 seconds for 35mm focusing.
     实例证明,该方法可以提高对焦效率和可靠性,35mm的对焦距离大约耗时10s左右。
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  focusing
We demonstrate the usefulness of these new tools of spherical data analysis by focusing on a selection of challenging applications in physics and astrophysics.
      
All the eleven derived models were further optimized using the PLS region focusing tool to increase the model resolution which led to eleven more models.
      
We present the results in terms of structure-activity relationships, focusing on the lack of the methoxy group and the influence of the amide side chain.
      
In this paper, survey of the key contents on this subject, focusing on the most well-known models based on kernel substitution, namely SVM, as well as the activated fields at present and the development tendency, is presented.
      
In the system, a focusing quantization algorithm is proposed to discretize all variables in the preparation set to improve resolution near the change between normal value to abnormal value.
      
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In this paper the plane vectorial equation for the paraxial trajectcry in the axially symmetric electro and magneto-static field is obtained from the Lorentz equation, thus clarifying the principle of focusing and image formatien of electron rags by such field.

本文从劳伦茨公式出发得到轴对称的静电磁场的旁轴轨足迹平面矢量方程式,并由此阐明了轴对称静电磁场对旁轴电子束的聚集成象的原理.

Cotton seeds collected from plants infected by Verticillium ablo-atrum were used for the purpose of studying seed transmission of the pathogen. Although verticilliate conidiophores had been observed occasionally under low-power microscope on the surface of the seeds plated on PDA in 1955, yet isolations of the organism failed due to the interference of several contaminants. Seeds were delinted in order to diminish the possibility of interference from lint-born contaminants. The materials were plated on different...

Cotton seeds collected from plants infected by Verticillium ablo-atrum were used for the purpose of studying seed transmission of the pathogen. Although verticilliate conidiophores had been observed occasionally under low-power microscope on the surface of the seeds plated on PDA in 1955, yet isolations of the organism failed due to the interference of several contaminants. Seeds were delinted in order to diminish the possibility of interference from lint-born contaminants. The materials were plated on different culture media such as PDA, acidified PDA, cotton meal agar and rice agar. All these plates failed to show verticillium colonies. Among the fungi obtained in these plates, Fusarium, Alternaria and Colletotrichum were the most frequent. Since both Verticillium albo-atrum and other fungi were harbored within the same seed, the difference of growth rates might be considered as an important factor involved in the difficulty of the isolations: Cultures of V. albo-atrum and Fusarium sp. were transferred simutaneously to PDA plates to test their growth rates. The diameter of their colonies were measured after incubation for 12 days under 22±1℃. Those of V. albo-atrum measured 2.8 cm., while the average of the latter was 9,3 cm. Interference of the fast-growers might render a slow-grower such as V. albo-atrum to be masked in the observations and to be depressed in the isolations. A method was developed to avoid the interference. The fundamental procedures of the method are outlined as follows. 1. Plating and observation. (1) Cotton seeds being delinted with commercial surphuric acid in order to avoid the interference from lint-born contaminants. (2) Delinted seeds being washed in a flask covered with wire gauze for 24 hours under running tap water in order to get rid of bacteria. Absorption of sufficient water during washing activates the hibernating mycelium. (3) Seeds being plated on 1.7% water agar instead of nutrient agar in order to diminish the growth of the fast-growers such as Fusaria and Alternaria. The plates being incubated under 22±1℃. for 15 days. (4) The plates being uncovered and observed directly under low-power microscope in order to observe the fungi undisturbed. 2. Isolation and preservation of the Verticillium cultures. (1) Verticilliate conidiophores being located under low-power microscope. (2) The tip of a flamed needle moistened with sterile agar being introduced within the microscopic field in order to fish the spores under focus. (3) Spore suspension being made by washing the needle in a 5 cc sterile water blank. (4) Dilution plates being made by placing 1 cc of the spore suspension in a petri dish and diluting with 10 cc of cotton stem agar. (5) The plates being observed under low-power microscope after incubation for 5—7 days at 22±1℃. (6) Verticillium colonies being locatad and a bit of the margin of a colony being transferred to PDA slant. (7) The slant cultures being flooded with sterile liquid paraffin after incubation for 7—15 days at 22±1℃. The cultures preserved with liquid paraffin were able to keep alived for 2 years. Seeds collected from the infected plants in 1955, 1956 and 1957 were studied. The percentages of seeds carrying Verticillium observed in these years were 39.8, 5.92 and 9.5% respectively. One of the representative single spore colonies obtained was identified as V. albo—atrum. Inoculation and reisolation tests showed positive results. Inspection of cotton seed samples collected from eight co-op farms in Shensi Province in 1958 showing that the percentages of seeds infected by verticillium ranged 3 to 23% with an average of 12.3%.

(1) 在陝西关中所采的黄萎病病株棉籽內部,常带有一些真菌和細菌,虽經用浓硫酸脫絨,这些菌类仍能从棉籽本身的組織內向培养基伸展惺庇玫捅剁R直接检查虽亦能見到輪枝菌从棉籽內露出,但由于其他菌类的生长速度較快,以致輪枝菌常被干扰,无从在洋菜上发展,故用一般方法很难分离和检查到棉籽所带的輪枝菌。(2) 用不含养分的水洋菜作为培养基时,杂菌的生长減弱,轮枝菌才能在基物上发展为菌落。又用流水冲洗法代替表面消毒,使棉籽吸收水分,同时也促使潛伏菌絲继續发展,并可冲去細菌。經試驗用上述两个步驟可以使棉籽所带的輪枝菌在水洋菜上形成菌落。結合低倍鏡直接检查法,可以較为方便地检查种籽带菌率。(3) 經初步拟定了一套检查方法和单孢子菌种分离法。惟应用时尚觉不够簡便,尚有待于进一步提高,特提出以供交流經驗。(4) 在1955—1957年的多次检查中,查得黄萎病病株棉籽带輪枝菌率为39.8%、5.9%及23.7%。在1958年初对大田种子进行检查,查得华阴等四县8个样品中带菌率为3%至23%,平均为12.3%。(5) 根据棉籽解剖培养結果,轮枝菌不仅存在于棉籽外部的短絨內,并且也存在于籽壳及籽仁上。(6) 从棉籽上分离到的轮枝菌特8号...

(1) 在陝西关中所采的黄萎病病株棉籽內部,常带有一些真菌和細菌,虽經用浓硫酸脫絨,这些菌类仍能从棉籽本身的組織內向培养基伸展惺庇玫捅剁R直接检查虽亦能見到輪枝菌从棉籽內露出,但由于其他菌类的生长速度較快,以致輪枝菌常被干扰,无从在洋菜上发展,故用一般方法很难分离和检查到棉籽所带的輪枝菌。(2) 用不含养分的水洋菜作为培养基时,杂菌的生长減弱,轮枝菌才能在基物上发展为菌落。又用流水冲洗法代替表面消毒,使棉籽吸收水分,同时也促使潛伏菌絲继續发展,并可冲去細菌。經試驗用上述两个步驟可以使棉籽所带的輪枝菌在水洋菜上形成菌落。結合低倍鏡直接检查法,可以較为方便地检查种籽带菌率。(3) 經初步拟定了一套检查方法和单孢子菌种分离法。惟应用时尚觉不够簡便,尚有待于进一步提高,特提出以供交流經驗。(4) 在1955—1957年的多次检查中,查得黄萎病病株棉籽带輪枝菌率为39.8%、5.9%及23.7%。在1958年初对大田种子进行检查,查得华阴等四县8个样品中带菌率为3%至23%,平均为12.3%。(5) 根据棉籽解剖培养結果,轮枝菌不仅存在于棉籽外部的短絨內,并且也存在于籽壳及籽仁上。(6) 从棉籽上分离到的轮枝菌特8号經初步鉴定系Verticillium albo-atrum Reinkeet Berth。(7) 特8号菌种經过接种試驗,确定其具有一定的致病力,并从再分离中获得該菌。(8) 棉籽是否能够传播黄萎病,似系一个检查方法問題。还希各方面进行测定,通过多次的检查和接种試驗始能充分确定。(9) 在分离的菌种中,除特8号菌种具有較深的菌落色泽外,还有一些菌种的顏色較淡,未須鑑定。棉籽所带的轮枝菌类型不一,还有进一步研究的必要。此外,棉籽內的輪枝菌和其他一些菌类究竟如何进入籽內,也有研究的价值。

The paraxial-ray equation for describing the electron trajectories in a periodic magnetic field has been solved by a perturbation method. Space charge effect is included. The cathode may bs partially shielded. By this method, it is possible to obtain higher order approximate periodic solutions as well as the optimum focusing conditions. For strong scalloping, these higher order periodic solutions are needed.

在余弦式及非余弦式周期磁场下描写电子轨迹的傍轴方程曾用微扰法求解,得到了一些最佳聚焦条件。在推导中考虑了空间电荷效应及阴极被部分屏蔽的情况,当电子束在周期场中波动比较大时这些结果也能应用。 另外用变振幅的方法研究了电子束在周期磁场内的稳定性问题,得到了一些包含有空间电荷密度及阴极屏蔽程度在内的稳定性条件。并绘出图线表示禁区位置因各种不同空间电荷密度及阴极屏蔽程度而改变的情况,知道虽然在用全屏蔽的电子枪情况下,正如过去一些著者所指出的,禁区位置不因空间电荷密度的大小而改变,但在阴极被部分屏蔽的情况下,空间电荷密度对禁区位置有显著的影响。

 
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