查询词典 porous

We can obtain ordered morph of the surface of porous silicon by control the parameter of the experiment.

通过对实验参数（如HF浓度与氧化反应的时间）的控制，可以得到形状规整的多孔硅，为以后的组装打下基础。

The wood structures of Lauraceae were characterized by most diffuse porous; most pores solitary, less multiple and cluster pores; simple and scalariform perforation with few bars; most solitary pore; alternate intervessel pitting; most of rays multiseriate, less uniseriate; all of rays heterogeneous, mostly heterogeneous Ⅲ and Ⅱ type rays; most of axial parenchyma paratracheal type, less banded or marginal type; oil cell and mucilage cell in axial parenchyma cell or ray cell; mostly fiber tracheid and libriform fiber, less septate fiber.

结果表明：除檫木外，其它木材的管孔分布均为散孔材，具较高的单孔率；导管分子穿孔板兼有单穿孔和梯状穿孔2种或者仅具有单穿孔；导管间纹孔式为互列；导管－射线间纹孔式类型丰富，主要为刻痕状和大圆状。木射线有单列和多列射线2种类型，单列射线稀少、短，多列射线数量多；射线组织主要为异形Ⅲ和异形Ⅱ；轴向薄壁组织以傍管状为主，少数有带状或轮界状。油细胞和粘液细胞普遍存在于射线薄壁细胞或轴向薄壁细胞中。木纤维由韧性纤维和纤维管胞组成，部分树种具分隔纤维。

The concept of the structural flow of a Newtonian fluid flowing in a pipe filling with saturated porous medium with is introduced.

当作用在流体上的外力超过屈服应力造成阻力时，管路中的Bingham流体便开始流动。

There are two types of black materials: one kind of them absorbs visible light through electron transition to form black, such as nigrosine, anthraquinone black, and iron oxide black, the other kind such as carbon black reflects and absorbs visible light several times with its superficial porous effect to form black.

现有黑色材料主要有两大类：一类是通过化学物质的外层电子吸收可见光跃迁来形成黑色，如苯胺黑、蒽醌黑、铁黑等；另一类则是利用材料表面的多孔结构，对光进行多次反射和吸收，形成黑色，如炭黑。

In addition provides the compressed air stainless steel air feeder, in crucible the base composition porous jet pipeline, causes the nitre salt fluid fast circulation tuck dive, achieves in the nitre salt fluid any temperature even consistent, controls the warm electricity cabinet's coordinate use automatically through the nitre salt stove, may cause the quenching work piece in the very short time needs the rapid chilling in any craft temperature which to the isothermal quench the automatic constant temperature.

另配备压缩空气不锈钢进气管，在坩锅内底部组成多孔喷流管道，使硝盐液快速循环翻腾，达到硝盐液内任何一点温度均匀一致，通过硝盐炉自动控温电柜的配合使用，可使淬火工件在很短时间内快速冷却到等温淬火所需要的任何工艺温度内自动恒温。

This paper presents the dielectric and mechanical properties of porous silicon nitride ceramics .

研究了预烧结对反应烧结多孔氮化硅陶瓷的介电性能和力学性能的影响。

It was possible to repair segmental bone defects using the living bone devices obtained from non-skeletal sites by taking biphasic porous HA/TCP ceramics as scaffold to"cultivate"bone tissue cells in vivo.

在实验研究的基础上，本课题还进行了40例双相多孔磷酸钙生物陶瓷修复骨缺损的临床尝试，取得了良好的修复和替代效果。

Based on the weakly nonelastic porous medium model, the wave damping and the distribution of stress and displacement in soil skeletal frame have been calculated carefully.

应用弱非弹性多孔介质模型，针对波浪衰减、底床中应力场分布以及土骨架位移等问题，进行了详细地分析。

The scattering characteristics of plane acoustic waves by fluid-saturated porous cylinders are studied by using the Biot-Stoll's theory with consideration of loss factors, such as the viscosity of fluid and the nonelastic loss of solid skeleton.

依据Biot-Stoll的流体饱和多孔媒质声传播理论，考虑了流体粘滞和骨架非弹性损耗引起的衰减因素，研究了多孔圆柱体对平面声波的散射特性。

Foam ceramic was a new nonmental porous material , it has 70%~90% porosity and three dimension solid net framework structure.

泡沫陶瓷是一种孔隙率高达70%~90%，具有三维立体网络骨架结构和贯通气孔的新型非金属多孔材料。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。