查询词典 mentum

We first use perturbative QCD theory to calculate the photon production cross section in nu- cleon - nucleon collisions at a center-of-mass energy of a few tens of GeV, taking into account the intrinsic parton transverse mo- mentum distribution and the next-to-leading-order contributions.

首先我们用微扰量子色动力学理论计算质心能量几十GeV核子核子碰撞中光子产生截面，同时考虑了部分子内禀横动量分布和二级费曼图的贡献。

Objective To analyse the morphologic characters of mentum and its use in the treatment of microgenia.

目的 探讨分析小颏畸形的颏部形态特征及其在颏部水平截骨整形手术应用中的效果。

Including 24h-LC_(50)and 48 h-LC_(50)、 the BCF and the teratogenesis in the mentum and mandibles of Chironomus plumosus Larva were observed.

主要包括24h-LC_(50)和48h-LC_(50)的测定、浓缩系数的测定和它们对羽摇蚊幼虫口器的致畸作用等内容。

The mass flow rate and the impact force were measured and the average mixing velocity of the two phase fluid was obtained based on the mo mentum theorem.

基于动量定理，测定两相流体的质量流量和冲击力，从而得到质量平均的流体混合速度。

The appearanee of halos and skins 15 usually identified by the abnormal inerease of total reaetion eross一seetions or by the narrow mo-- mentum distributions in the fragmentation of weakly bound nueleil一12}.xn order to manifcst the halo phe- nomenon elearly it 15 hope

结果表明，在所测量的角度范围内(6°-20°)，17O的这一依赖关系可以用一条直线很好地拟合，而17F的这一依赖关系需要两条不同斜率的直线才能拟合。17F数据拟合中的这种斜率改变可能起因于17F的奇异结构。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。