密度

A mouse was chosen and moulted, and then irradiated by the IPL system in vivo under certain wavelengths with different energy densities. The morphologic changes of mouse skin were observed before and after (1d, 3d, 7d) irradiated respectively. The results were compared and analyzed. The function of dermal collagen during the renovating of the tissue was studied and the key factors were presented.

以小白鼠作为研究对象，先去毛，用IPL在一定波长不同的能量密度照射活体小白鼠皮肤，分别在照射前、照射后，以及之后的1 d，3 d，7 d应用激光共聚焦显微镜观察皮肤内部的结构，并对其不同的能量密度与照射前相比进行分析，讨论了真皮胶原蛋白在组织的修复过程的作用及其中的关键因素。

Methods Mousetraps were distributed for the investigation; direct immune fluorescence was applied to detect the virus carriage in rats, 3451 mousetraps were distributed and 886 rats were caught, the rats density was 25.67%; 50 caught rats carried EHFV virus (5.64%) It has been proved that there exists a natural cycle of EHFV virus in Kaifeng County; effective measures should be taken to control the epidemic situation of EHFV.

用布夹法开展鼠密度调查，用直接免疫荧光技术进行鼠肺带毒检查。结果共有效布放鼠夹3451夹次，捕获鼠886只，鼠密度为25.67%。带毒50只，鼠类带毒率为5.64%。捕获鼠种有大家鼠、小家鼠、黑线姬鼠、大仓鼠和小仓鼠。结论证实河南省开封县存在肾综合征出血热病毒的自然循环，应采取有效措施控制流行性出血热疫情。

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 apparent density of the porous PLA decreased with increasing content of nucleating and foaming agent.

结果表明，发泡剂与成核剂的增加能降低发泡PLA的表观密度，增加其泡孔密度。

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。

There are three types of density dependence: overcompensating, under compensating and exactly compensating.

补偿和密度制约密度制约有三种形式：过度补偿，补偿不足和准确补偿。

By knowing or estimating the matrix and fluid densities, the porosities of each formation can be calculated.

由已知的或者估计的流体密度和骨架密度可以计算出每个地层的孔隙度。

We present a general density evolution-based procedure which finds the optimal puncturing of a base code.

本节根据非规则码的密度进化理论推导出RC-LDPC码的密度进化公式。

A successional Artemisia ordosica and A. frigid community, located on the eastern edge of the Tengri Desert in Alashan Left Banner, Inner Mongolia, was selected as an object for study. Densities of the plants and total nitrogen and available phosphorus in 0~20 cm soil layer were measured of the 400 quadrates (4m×4m) in the sampling plot (80m×80 m) for analysis of relationship between N/P ratio in the soil and plant density thereupon and between the two in spatial heterogeneity.

选择腾格里沙漠东缘内蒙古阿拉善左旗境内的油蒿＋冷蒿群落为研究对象，在80m×80m样地400个4m×4m样方中，调查了油蒿和冷蒿的密度，测定了0~20cm土层中的全氮和有效磷，分析了土壤氮／磷比与植物密度之间及其空间异质性之间的关系。

Unhealthy combination of "good" and "bad" cholesterols quadruples the risk.

不健康的胆固醇（不管是高密度的还是低密度的）的混合物将使发生心脏病的风险增至普通风险水平的四倍。

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