百度试题 结果1 题目电子束的有效治疗深度(cm)与电子束能量(MeV)的比值约为 A. 1~1/2 B. 1/2~1/3 C. 1/3~1/4 D. 1/4~1/5 E. 1/5~1/6 相关知识点: 试题来源: 解析 C 反馈 收藏
MEV supports interactive filtering on key data attributes that aim to help analysts hone in on the set of evidential reports. A multi-layer treemap visualizes the count and severity of the errors conveyed in the underlying reports, while the interaction between these layers aid in the analysis ...
These detectors were made directional for low energy 纬 rays by a lead occulting disk, 18 cm in diameter and 10 cm thick, placed 50 cm above the crystals, the axis of the whole assembly being pointed so as to track a celestial source continuously. The occulting disk alternated between ...
The final parameter values are: ${mathrm{E}}_{mathrm{p}}$=1686ifmmodepmelsetextpmfi{}6 keV, ${ensuremath{gamma}}^{2}=(0.515ifmmodepmelsetextpmfi{}0.02)ifmmodetimeselsetexttimesfi{}{10}^{ensuremath{-}13}$ MeV cm for the ${mathrm{J}}^{ensuremath{pi}}={frac{3}{2}}^{ensur...
Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, 70 kg, 150 lbs, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!
1 meV = 8.065 cm-1 1 Kcal/mol= 0.0434 eV = 43.4 meV。
5 - 10 MeV Bremsstrahlung from a approx. equal to.1 gm/cm gold radiatorD.J.S. Findlay
Peak-to-peak variations in heart periods (VHP) before atropine injection correlated significantly (r = 0.90,... FM Fouad,RC Tarazi,CM Ferrario,... - 《American Journal of Physiology》 被引量: 627发表: 1984年 A rapid and simple behavioural screening method for simultaneous assessment of limbic...
long by 8 cm. wide by 8 cm. deep, and the electrodes were made of pure rp.etal, the metal being that of the positive ions. The results of this research force one to the con- clusion that macroscopic space charges do exist in an electrolyte during electrolysis, and that this ...
放疗中使用的高能电子束指至少能穿过2cm以上水的电子束,即能量大于或等于()。 答案解析 (单选题) 男,22岁,因打架被他人用刀从左腰部刺入体内,伤后血尿,腹痛,伤口流血不止2小时来院。查:BP100/70mmHg,P100次/分,左腰三角处伤口4cm长,深度约7～8cm,伤口流出新鲜血,触全腹痛,肌紧张,患者输血补液,采取最佳治...