气体冷冻

The second part of the 19th century witnessed several major discoveries in the field of cryogenics, including adiabatic expansion systems for cooling gases, that led to the liquefaction of oxygen, air, and nitrogen, vacuum flask, which facilitated storage and handling of liquefied gases and the Joule-Thomson effect to produce continuously operating air liquefiers, triggered a resurgence of cryosurgery

19世纪后叶，低温学领域有几项重要发现，包括将纯氧、空气和氮气液化绝热膨胀系统，能储存和处理液化气的真空瓶，以及应用Joule-Thomson 效应产生持续液化气体流，这些均促进了冷冻疗法的发展

The experimental research and numerical simulation to control the temperature inside the rectangular parallelepiped below - 18% by sublimation of dry ice were conducted.

对用干冰升华气体将长方体冷冻室内的温度控制在-18％下进行了数值模拟和实验。

Therefore, the theory of low-pressure gas mass transfer in capillaries provides a new method for describing the mass transfer process in microwave freeze drying of capillaceous porousmaterial.

因此，毛细管低压气体输运理论为描述毛细多孔介质微波冷冻干燥中传质过程提供了一种新的方法。

Model QS-350 This machine is of horizontal disc type airflow crusher, and the whole crushing process is comprised of air compressor, air storage tank, air freezer and drier, model QS-350 airflow crusher, cyclone catcher and dust collector is ejected into the crushing chamber by means of high speed ejection flow formed by high pressure air through charging ejector, and the crushing nozzle outside ejects high speed air flow into the crushing chamber at a certain direction, making the material severely collided and frictionated therebetween and thus crushed.

QS-350型为水平圆盘式气流粉碎机，整个粉碎流程由空压机、储气罐、空气冷冻干燥机、QS350型气流粉碎机主机、旋风捕集袋及吸尘器等组成。该机是靠高压气体通过加料喷射器所形成的高速射流，使粉碎原料被射人粉碎室，粉碎室外围的粉碎喷嘴，有方向性的向粉碎室喷射高速气流，使物料间产生激烈的碰撞，摩擦而获得粉碎。

In the air and gas purification technology separating the field, we have a pressure swing adsorption, freeze-drying, membrane separation technology.

在空气和工艺气体的净化分离领域，我们拥有变压吸附、冷冻干燥、膜分离等技术。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。