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neutron造句
151. A proton positive charge and electron a negative charge but a neutron has neither. 152. It is shown that as increasing the isospin asymmetry, the proton mean free path decreases while the neutron one increases. 153. Fast neutron radiography system is mainly composed by a scintillation fiber array and a scientific grade optical CCD. 154. A neutron has no appreciable electromagnetic interaction with nuclei or with electrons. 155. For the same shape, the neutron flux increases then turn to decrease with decreasing the area of the target. 156. LWD neutron logging takes an important part in logging - while - drilling ( LWD ). 157. In the design and application of neutron guides, it is very important to simulate neutrons transmission by Monte-Carlo method. 158. The fast neutron spherical critical assemblies are analyzed by means of the Monte-Carlo method with multi-group section data. 159. Nuclear fission a process whereby a uranium nucleus absorbs a neutron, is not. 160. Influence of guide position, length, cross section and critical angle multiplier on neutron intensity, divergence, spectrum and uniformity at the exit of guide was investigated. 161. A low mass X-ray binary (LMXB) is a celestial system in which a relatively normal star is being eaten alive by a nearby stellar corpse, either a neutron star or a black hole. 162. As a non-destructive testing technique, fast neutron radiography has many unique advantages comparing with X-ray and thermal neutron radiography. 163. The principle, scaling method and maintainance of neutron moisture gauge are introduced in detecting charge(coke) moisture content. 164. Horizontal radiation ducts in research reactors are used to reduce the high energy neutron flux from near the core. 165. Gas from the dwarf flows into a hot spiraling disk around the neutron star. 166. A lustrous gray strong metallic element resembling titanium; it is used in nuclear reactors as a neutron absorber; it occurs in baddeleyite but is obtained chiefly from zircon. 167. The presence of boron or a boron compound in neutron shields has certain advantages. 168. Though the maximum masses and corresponding radii are similar, bare strange quark stars and normal neutron stars could be distinguished in the regime of low masses. 169. Neutron shielding factors of the foil are calculated for each group in intermediate energy range with detail consideration of cadmium filter and scattering by the foil itself. 170. A design is given about fast and high detection efficiency fission chamber for prompt neutron decay constant measurements. 171. How to control the downhole tool′s neutron tube from the surface is a complex problem in the pulse neutron oxygen activation logging tool, which measures through a single core cable. 172. The large nuclear temperature evaluation would violate conservation of energy, and may lead a negative neutron KERMA factor. 173. Source spacing is one of the key parameters of neutron logging tool, by which permeability precision, sensitivity, resolution of the logging tool are determined to a large extent. 174. Objective To introduce an inductively coupled plasma atomic emission spectrometry (ICP-AES) method for the determination of overall boron in rats glioma cells for boron neutron capture therapy(BNCT). 175. The boron neutron capture therapy has a promising role in cancer treatment since it can achieve selectivity at the cellular level. 176. Also epithermal neutron activation analysis and cyclic activation analysis had be developed on Shenzhen MNSR. 177. It is not allowed to neglect the resonance self-shielding effect in hybrid blanket and fast reactor neutron designs. 178. Every fusion reaction devours exactly one tritium ion and produces exactly one neutron.Sentence dictionary 179. This is called a Fission Neutron Energy Spectrum based on the thermal fissioning of uranium 235. 180. Experiments were carried out with EMI photomultiplier tubes(9815B and 9850B) at 5SDH-2 accelerator and the responses to neutrons with neutron energy ranging between 0.5 MeV and 5 MeV were obtained.