查询词典 density

A decrease in density and pressure in a medium, such as air, caused by the passage of a sound wave.

稀薄化介质中密度和压力的下降，例如在空气中，由于声波的穿越而发生

The key is to take views of things over the long haul. Chinese population density, is very high, expecially developed countries'prohibition to overly autos. The world must not allow each person own a car in the future. The time, at which America developed the auto industry, was totally different from the current situation China faced, though America made a great success. We can make airplane, train, aircraft carrier and other more advanced technology. Why must we make autos?

关键是从长远的观点看问题，中国的人口密度，特别是大城市不允许拥有过多的汽车，世界将来的格局也不允许人人都拥有汽车，美国发展汽车的那个时代与当今中国面临的境况完全不同，他能走通你未必能走通，到什么山上唱什么歌，完全可以跨越一些路径，发展更为先进的理念，飞机可以做，火车可以做，航母也可以做，为什么非得做汽车呢？

Compared with riveted and welded structures, the over-all aluminum wallboard profiles (wallboard or profile in short term), have the advantages of high strength/density ratio, fine airtightness and reliable properties, being widely used in ship, traffic and special containers etc.

大型铝型材整体壁板具有比强度高、造型美观、耐腐蚀性和气密性好等优点，随着交通运输的高速化、节能降耗、减轻环境污染等要求的日益高涨，研制挤压壁板作为车厢地板、壁板、顶板等结构件就愈加重要。

This is mostly because of Alaska's low population density.

这主要是因为阿拉斯加的人口密度低。

Its lumber material is narrow for the alburnum, distributes in north compared to the south narrowly, light yellow arrives the yellow light yellow, the heartwood to brown brings slightly red; Has the resin, the durability is bad; The lumber texture, the density, standard natures and so on the festival receive the geography condition influence which grows, is widespread as a result of this lumber distribution, but therefore the lumber material the variation is greatly more obvious than because of the condition other tree seeds; The lumber weight is ordinary, solid.

其木材材性为边材窄，分布在北部的比南部的更窄，浅黄到黄色，心材浅黄至褐色略带红色；有树脂，耐久性差；木材的纹理、密度、节子等格质均受生长的地理条件影响，由于该木材分布广泛，所以木材的材性因条件而变异大比其他树种明显；木材重量一般，较结实。

The density changes of Radix Puerariae and Flos Puerariae were determined in different concentration and time and enzyme dosage by the alcoholometer.

方法］利用酒精比重计测定葛根与葛花在不同用量、不同时间及不同酶用量的条件下与酒精作用的密度。

Dr Steenburgh and Mr Alcott found, not surprisingly, that temperature plays a large part in controlling snow density.

Dr Steenburgh和 Mr Alcott的发现并不出人意料，他们发现在降雪形态的影

The results from principle components analysis showed that density of grasses, heterogeneity of ground environments and cover of grasses were the main factors for rock partridge and heterogeneity of ground environments, cover of grasses for Alecto...

主成分分析表明，草本密度、地面异质性和草本盖度是石鸡栖息地选择的主要影响因子；地面异质性和草本盖度是大石鸡栖息地选择的主要影响因子。

Methods: Density gradient centrifugalization and absorption technique wererespectively applied to detach peripheral blood mononuclear cells andperipheral blood lymphocytes,T lymphocytes were got by Nylon postabsorption method, and CD4+T and CD8+T lymphocytes divided with anti- CD4 andanti-CD8 antibody by alexin cytotoxic method.

密度梯度离心法分离外周血单个核细胞，玻璃器皿吸附法分离外周血淋巴细胞，尼龙棉柱法分离 T 淋巴细胞，补体介导的细胞毒法分别制备 CD4+T和 CD8+T 淋巴细胞，采用 T 淋巴细胞与角质形成细胞共培养技术研究银屑病患者外周血 T 细胞对角质形成细胞的影响，免疫组化法检测共培养角质形成细胞 Ki67、c-Myc 及 Bcl-xL 蛋白的表达。

When the cell density scale of the algae was 1000 cell/mL, the algaecide could restrain the growth and propagation of the algae only with the concentration of 0.05 mg/L.

实验发现，藻细胞密度为1000 cell/mL时，0.05 mg/L的异噻唑啉酮即可以完全抑制藻细胞的生长繁殖。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了