密度

Unfortunately, it has been shownthat these methods are not suitable to study about chemical bonds due to not involvingchemical bonds. In order to consider chemical bonds obviously, we have proposed an atom-bondelectronegativity equalization model on the basis of density-functionaltheory and electronegativity equalization principle. The main contents of our atom-bond electronegativity equalization model contain:(1)Considering the fact that there are varies of chemical bonds in molecules andpartitioning the molecular electron density as summations of atomic electron densitiesand chemical bond's electron densities, we obtained the basic equations of atom-bondelectronegativity equalization model: the expression of the total energy 〓, theexpression of the atom electronegativity 〓 and the expression of the bondelectronegativity 〓.

为了明确地考虑和处理分子中存在的化学键，以便能够更好地描述体系中的电荷分布进而准确地描述分子体系中的有关物理化学性质，尤其是与化学键有关的物理化学性质，我们在密度泛函理论和电负性均衡原理基础上提出了原子-键电负性均衡模型，原子-键电负性均衡模型的主要内容是：(1)考虑到分子体系中存在各种化学键这个事实，将分子空间看成是由原子区和化学键区组成的，将分子的单电子密度表达成为分子中各组成原子的单电子密度和各化学键的单电子密度的加和，从而得到了原子-键电负性均衡模型的基本方程：分子体系总能量〓和分子中原子电负性〓和化学键电负性〓表达式。

The density of collapsed lymphoducts in the interior of the pulmonary squamocellular carcinoma tissue was much higher than that in the pulmonary inflammatory pseudotumor.

在肺鳞癌组织周边部：单腔淋巴管密度远大于塌陷淋巴管密度和网状淋巴管密度，塌陷淋巴管密度小于网状淋巴管密度。

Ten cases which were first found showed regular oval shape, 4 of 5 recurred lesions appeared as irregular shape. On bone algorithm reconstruction of CT, 11 lesions revealed heterogenous "ground-glass like" mild hyperdensity or hyperdensity masses compared with brain tissue with cystic areas, stippled calfication was seen in 1 cases, the typical eggshell like bony capsule in 7 cases, 5 cases under it showed ring or arc hypodensity line.

CT表现：11例于骨窗上均呈密度不均匀的&磨玻璃&样略高密度或高密度肿块影，内部均可见大小不等的囊变区，1例伴点状更高密度钙化影，7例肿瘤周边可见特征性&蛋壳样&骨壳形成，其中5例于其内侧可见到环形或弧线形底密度影。

Results:(1) All of HCC were irregular hyperdense in arterial phase companioned with mass and hyperdense tumor vessels.

结果 ：( 1)肝动脉期肿瘤实质出现密度高于肝实质的肿瘤血管和瘤区强化，门静脉期其密度迅速降低，至平衡期为低密度；( 2 )肿瘤边缘于肝动脉期和门静脉期均可见环行强化；( 3)转移性子灶仅在肝动脉期明显强化，门脉期全瘤密度迅速降至等密度；( 4)门静脉受累表现为肝内分支的边缘侵蚀、破坏、中断，或为不规则的充盈缺损。

Test output film's site density usually tools of the trade is density gauge, the type of the current density gauge, it is not all the same features, but we use density gauge at least should have test film site density values and film dot value two things, and you must test a higher accuracy.

尝试输入胶片的实地密度值凡是搁置的东西不离是密度仪，长远密度仪的种类比力众，功用也不尽不异，但是我们所搁置的密度仪起码不该敷裕尝试胶片实地密度值和胶片网点百分比值两项功用，并且务必敷裕较矮的尝试精确度。

Test output film's site density usually tools of the trade is density gauge, the type of the current density gauge, it is not all the same features, but we use density gauge at least should have test film site density values and film dot value two things, and you must test a higher accuracy.

尝试输入胶片的实不天密度值凡是搁置的东西不离是密度仪，长远密度仪的种类比力众，功用也不尽不异，但是我们所搁置的密度仪起码不该敷裕尝试胶片实不天密度值和胶片网不面百分比值两项功用，并且务必敷裕较矮的尝试大略度。

A field trial for plant density has been used for practical remediation in 2004 and 2005, it has four treatments, 10 cm×10 cm、20 cm×20 cm、10 cm×40 cm and 40 cm×40 cm, respectively. The results were follows: the optimization plant density was 20 cm×20 cm; Peteris vittata L. was a herbaceous plant fit to adequacy increased density for enhancing the biomass and removalling of arsenic; with increased the plant density, the plant were accumulated more proportion arsenic in their fronds, and then made promote the efficiency of arsenic removal from contaminated soils.(2) It was a complicated pyrolysis course for plant incineration.

1在10cm×10cm、20cm×20cm、10cm×40cm与40cm×40cm 4个种植密度下，利用蜈蚣草对砷污染土壤进行了2年的田间实际修复，得出如下结论：蜈蚣草是一种适宜于密植的草本植物，具有通过提高栽培密度来提高其地上部生物产量的潜力；同时蜈蚣草密植有利于促使其吸收的砷向地上部富集，从而有利于进一步提高其对砷污染土壤的修复能力；综合考虑修复过程中的收获方式、经济成本与可操作性，在4个密度处理中密度20cm×20cm为蜈蚣草的最佳栽培密度。

Based on Stuart et al.'s electron density evolution equation, the electron density evolution process in fused silica film irradiated by short-pulse laser for τ∈[0.015] ps were studied by means of numerical method. The effects of initial electron density N and laser pulse width τ on laser threshold intensity I and damage threshold fluence. F were analyzed respectively.

基于STUART等人的电子密度演化方程，运用数值模拟方法，研究了脉宽为τ∈[0.01， 5]ps范围内单脉冲激光作用下熔融石英薄膜中电子密度演化过程；讨论了初始电子密度、激光脉冲宽度对阈值功率密度和阈值能量的影响；分析了初始电子密度、激光脉冲宽度对多光子离化及雪崩离化的影响。

It is found by solving the self-consistency equa tion that, at zero chemical potential and finite temperature the chiral phase transition is of second order, while both at finite temperature and density and at zero temperature finite density this transition is of first order.

通过求解序参量所满足的自洽方程，其结果表明：在零化学势有限温度情况下，有二级手征相变发生；对于有限温度和密度以及零温有限密度两种情况，手征相变为一级，并且其转变温度或密度与费米子所处的初始相有关，即从破缺相到正常相的转变温度或密度不同于从正常相到破缺相的转变温度或密度。

Results Leiomyosarcoma on Abdomen usually solitary and welldefined LSA from the stomach (n=12),colon(n=5),ileum and jejunum (n=4),mesentery (n=2),with an average diameter of 6.5cm.

结果：平滑肌肉瘤常单发，大小不一，行态多变，发生于胃12例，结肠5例，小肠4例，肠系膜2例，平均直径为3.8 cm~6.5 cm，大多边缘清晰，伴肠管及肠系膜血管移位，平扫表现为等密度，稍高密度14例，周边等密度，中央低密度6例，混杂密度2例，增强后明显强化12例，边缘明显强化7例，不均匀强化4例。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷