查询词典 average density

The density of states and charge density distribution are used to study the underlying mechanism of structure and phase stability of ternary Laves phases in Mg-Al-Ca alloys.

态密度和电荷密度的计算用来研究Mg-Al-Ca合金中三元Laves相稳定性的内在微观机制。

Most plastic mulches used in the United States are either linear low-density or high-density polyethylene. They are typically 0.012 to 0.031 mm thick, 122 to 152.4 cm wide, and on rolls 607 to 1463 m long.

在美国使用的大多数塑料薄膜不是长条形低密度的就是长条形高密度的聚乙烯膜，通常厚0.012~0.031mm ，宽122~152.4cm ，每卷长607~1463cm 。

The mean arterial pressurewere measured in each rat.the stereological parameters such as the myocardial surface density、the myocardial volume density、the myocardial specific surface and the mean free path etc.were measured and numerated.

建立腹主动脉缩窄性高血压大鼠模型，测定大鼠平均动脉压、大鼠心肌的表面积密度、体积密度、比表面及平均自由程等各项体视学参数并计算。

This delayed density dependence may also produce cycles in predator and prey abundance; Overcompensating density dependence.

这种延缓的密度制约可能使捕食者和猎物多度之间产生周期。

Overcompensating density dependence occurs where the effect of increased density more than outweighs the initial augmentation.

当密 度制约的效应超过了开始种群数量的增加，称为过度补偿。

The high xylanase producing strain parasitizing on the shelling fresh ramie was screened in the paper.The single factor experiment is carried out on the various carbon sources and density, the various nitrogen and density,the initial pH, the quantity of vaccination,the fermentation temperature and time.

摘 要：本文以去皮的新鲜苎麻为原料，筛选产木聚糖酶的高产寄生菌株，对其碳源种类及浓度，氮源种类及浓度，初适pH值、接种量、发酵温度及时间进行了单因素的试验，并选取影响显著的pH值、接种量、发酵温度及时间进行四因素三水平的正交实验。

Driven by high frequency and multi-directional shot peens, dislocations of various orientations proliferate into the metal, and accumulate in high density in the surface layer of a shallow depth. Migration, generation and annihilation of dislocations dictate the evolution of mobile dislocation density.

无论是对低维基本物理以及其中新奇量子现象的探索与认识，还是微电子工业水平的持续发展，都迫切地需要掌握一种能够精确、可靠地操控表面纳米结构的方法。

Measurement of CeO2 relati ve density shows that the relative density of CeO2 nanocrystalline powders imp roves with the increasing of CeO2 particles sizes.

相对密度分析表明，随CeO2纳米晶粒度的增大，粉末的密度增加。

Results When compared with those of young rats, the total volume of white matter and the total length of myelinated fibers in the white matter of aged rats were decreased by 24.1% and 41%, respectively. In the white matter of aged rats, the volume density of myelinated fibers, the volume density of myelin sheathes and the mean diameter of myelinated fibers were increased by 30%, 23.9% and 31%, respectively, when compared with those of young rats.

结果 老年组大鼠大脑白质总体积，有髓神经纤维总长度分别下降了24.1％和41％；老年组大鼠有髓神经纤维体积密度、髓鞘体积密度和纤维直径分别增加了30％、23.9％和31％，具有统计学意义。

The results showed that the greatest bulk density values appeared in the 49th day after silking, and harvest later had influence on the grain bulk density.

从试验结果分析，容重最高值出现在吐丝后49天，晚收影响籽粒的容重。

Objective:To compare the response control and attention of Schizophrenic patients with that of the healthy controls by Integrated Visual and Auditorycontinuous performance test. To quantitate the impairment of cognitive function in patients, and to explore the relationship between cognitive function and the severity of the disorder.

目的：探讨精神分裂症病人在IVA持续操作测试中的反应控制能力、注意力等，并与健康人进行比较，从而量化精神分裂症病人的认知功能损害，并进一步探讨其认知功能与疾病严重程度的关系。

Main effective factors including subcooling degree, mechanical vibration, gas hydrate reformation, environment temperature, noncondensing gas and surfactant are analyzed.

指出过冷度、机械振动、重复生成水合物、环境温度、不凝性气体、添加剂是影响气体水合物生成的主要因素，还对R152a水合物的放冷进行了实验研究。