surface-to-mass ratio

Because CNTs possess fibrous shape with high aspect ratio, large accessible external surface area, well developed mesopores, and chemical and thermodynamic stability, CNTs hold superior removal capacities of environmental pollutants.

由于CNTs特殊的纤维性结构、巨大的可接触外表面积、发达的间隙孔结构以及较高的化学和热力学稳定性，CNTs拥有了较高的环境污染物吸附能力。

The resulting three-component system exhibited an anatase/ rutile ( weight ratio of 73.8/ 26.2) mixed phase structure, narrower band gap ( 2.25 eV), and extremely small particle sizes ( ca. 12 nm) with metallic Ag particles well-distributed on the surface of the composite.

所得三元体系为锐钛矿与金红石混合晶相结构，锐钛矿相与金红石相质量比为73.8/26.2，带隙能窄化到2.25eV，Ag纳米粒子均匀分散在粒子尺寸约为12nm的复合物表面。

The influences of the number of layers and thickness ratio on the surface residual stresses were studied.

得出了层数和层厚比对叠层复合陶瓷刀具材料残余应力的影响规律。

Lab Mixing Ratio Test of Drilling Mud Flushing Liquid for Surface Ground Pre-Grouting

地面预注浆用泥浆冲洗液的室内配比试验

By the experiments, we have proved that the delayed time of ignition is not only dependent on the surface-to-mass ratio of aluminum dust, but also on the content of pure aluminum in an aluminum particle.

点火延迟与铝粉颗粒的比表面积和活性铝的含量有关，而与环境的氧含量基本无关；

PS has many unique properties such as enormous intermal surface, high resistance ratio, high chemical activity, etc. PS has been developed in many application fields including optoelectronics, thermoelectric materials, sensor, microwave/ radio frequency microelectronics, biomedicine, etc.

多孔硅由于具有大的比表面、高电阻率、高化学活性等性能，在光电子、热电材料、传感器、微波/射频微电子学、和生物医学等许多领域获得了广泛的应用。