查询词典 density function

PSD method for identifying cross power spectral density of distributed excitation force is discussed by calculating cross power spectral density of measured response.

功率谱密度函数识别法则是以系统反应之交叉功率谱密度函数识别外力之交叉功率谱密度函数。

Here is a standard of crowdedness. In Japan, when the standing density in a car is 4～6 person/m2, people will accept it easily; when it comes to 6～8 person/m2, people still think it normal. But when the density is 9～12 person/m2, people would complain the "crowdedness".

以拥挤度为例，日本的地铁拥挤度标准提出：当站位密度为4～6人/m2时，这样的拥挤度认为是"可以接受的"；当站位密度为6～8人/m2时，尚属"正常状况"；当站位密度为9～12人/m2时，就达到了"拥挤状况"。

The proper planting density should be 1 m × 0.3 m and 0.3 m × 0.3 m for land under broadleaf crown and shady droughty land respectively. If the havelock equipment in field was used, seedlings with 15-20 cm for height and 0.30 cm for diameter should be selected for cultivation, with the density and transmittance being 0.3 cm × 0.3 cm and 50% respectively.

林冠下栽植和山垅旱地造林的适宜密度分别为1 m×0.3 m和0.3 m×0.3 m；若利用农田庇荫设施栽培，应选用苗高15~20 cm，地径0.30 cm以上规格的苗木栽植，栽植密度为0.3 m×0.3 m，遮阳透光率在50%左右。

Nearest M—C bond. Comparing the covalent electron density of MC with NiAl at different crystal planes, it is found that the electron density along the interface (110)_//(100)_ ...

通过对NiAl和MC的不同晶面的共价电子密度的分析发现：(110 ) NiAl和(10 0 ) MC在一级近似范围内基本上保持连续；采取适当的制备工艺，使复合材料中存在尽可能多的(110 ) NiAl//(10 0 ) MC，有可能使这种复合材料具有更优异的力学性能

Low density polyethylene has a crystallinity range of 65 percent, and high density polyethylene of 85 percent.

定语从句中的省略。定语从句中的省略。

Soil with 1.2 g/cm3 bulk density was most favorable for the plant height and root growth of cucumber plants,and soil with 1.4 g/cm3 bulk density was most favorable for the stem thickness,yield and nutrient uptake of cucumber plants under this experiment conditions.

在本试验条件下，容重为1.2.g/cm3的土壤利于株高及根系的生长，容重1.4g/cm3的土壤则利于茎粗、根系养分的吸收及产量的增加。

Current density and energy density is one of the most important parameters for designing the glass electric melting furnace.

电流密度和能量密度是设计玻璃电熔炉最重要的参数之一。

Numbers of secretory granules, oplasmic reticulums, mitochondrias in ACTH cells all changed distinctly. GTH cytoplast were full of big and small, high density electron secretory granules.STH cells were in activity synthesis and secretion, secretory granules were from fusion to release. TSH cells cytoplast evacuated secretory granules, electron density decreased and vacuofes appeared.

ACTH细胞分泌物颗粒数量、内质网及线粒体均发生明显变化；GTH细胞胞质中充满电子密度较高的大、小两种分泌颗粒；STH细胞处于活跃的合成和分泌状态，分泌颗粒呈现出由融合到释放的状态；TSH细胞胞质中分泌颗粒排空，且电子密度降低，出现大空泡。

HP were determined by rapid urease test,Warthin-Starry silver stain and polyme rase chain reaction,and expression of P21,P53,C-myc and C-erbB-2 were detecte d by immunohistochemicology (Streptaovidin/Peroxidase,SP) method,and were evalua ted with positive expressive integrality,the mean optical density an d the integral optical density in computer assisted image analysis system.

方法经内镜和病理诊断的胃癌91例，用快速尿素酶试验，改良W-S银染色和PCR方法检测上述标本中Hp；以S-P免疫组织化学法检测P21、P5 3、C-mcy及C-erbB-2，并用阳性表达积分半定量和免疫组化图像分析进行比较。

Through measuring density inside and in the position with defect, it was discovered that density of defect in timber has corresponding relation to the pressure signal extracted by probe. Mechanism of the mechanical pressure deterred to measure defect in timber was set up.

压阻式木材内部缺陷类无损检测技术要解决的技术难点是木材密度特征的提取方式，以及对信号的分析消噪和判断等技术手段，分为如下几个方面进行研究。

Pachomius manual labour was organized as an essential part of the monastic life; and since it is a principle of the monks as distinguished from the mendicants, that the body shall be self-supporting, external work of one sort or another has been an inevitable part of the life ever since.

根据圣pachomius体力劳动组织作为一个重要组成部分寺院生活；以来，这是一个原则的和尚，作为有别于乞丐，该机构应自支撑，对外工作的这种或那种已一个必然的一部分，生活至今。

In order to study the effects of parametrical rolling on the ship movement and tilts, in allusion to ship's navigating in regular following waves, the equation of ship rolling motion is transformed into normal Mathieu equation by proper variable replacement when strong parametrical excitation in restoring moment varied according to sine or cosine wave.

为研究参数横摇对船舶运动和倾覆的影响，通过对船在规则波上随浪航行时，恢复力矩中出现的1个以正余弦规律变化的强参数激励项进行适当的变量置换，将船舶的横摇运动方程转换成标准形式的Mathieu方程。