pressure-tight box

The electric fuel pump set up fuel box inside, the oil through fuel filter to central thrower with low pressure.

一般情况下，电动燃油泵安装在燃油箱内，系统以低压将油经过燃油滤清器送到中央喷射器喷出。

Then, a Box-Behnken design by using Design-expert software was conducted, we selected mold temperature, melt temperature, holding pressure and dwell time as experimental factors, selected warpage and shrinkage as target variable.

其次，运用Design-expert软件设计了Box-behnken试验，选取模具温度、熔体温度、保压压力、保压时间作为实验因素，以翘曲变形和体积收缩率作为目标变量。

Pre-pressure test of simply supported box girder support and technical adjustment of elevation model

简支箱梁支架预压试验与立模标高调整技术

Using homemade test box, the study on measurements of the earth pressure and the water-soil pressure acting on rigid retaining wall in modes of active wall translation, rotation around its top and rotation around its bottom, is performed.

利用自制试验箱进行了刚性挡墙平动、绕墙底转动和绕墙顶转动三种墙体主动变位模式情况下，挡墙上作用的土压力和水土压力的测试研究。

Box-type negative-pressure boiling dry-box

箱式负压沸腾干燥箱

When the high pressure mercury lamp, high pressure sodium lamp and Matallic Halide lamp is selected by custom who need equip relevant flameproof ballast box.

用户采用高压汞灯、高压钠灯、金属卤化物灯光源时，须配套相应的隔爆型镇流器箱。

Tne degree temperature distribution asymmetry of ERI and BL quench box are both lower than that asymmetry of UOC quench box. Pressure drop of ERI quench box is the lowest, UOC is intermediary, and BL is the highest.

ERI型和BL型急冷箱的温度分布不均度均比UOC型的低，在压力降方面ERI型最低，UOC型居中，BL型最高。

The cascade refrigeration system can be applied to the thermal vacuum test facility of spacecraft subassembly, ordinary pressure high and low temperature test container, low temperature box for medicine, and so on.

复叠制冷系统可以应用于卫星部组件热真空试验设备、高低温试验箱以及医用低温箱等。

The utility model is mainly composed of a wash basin, a box body, a sewage pressure device, a one-way valve, a pressure reducing valve, a water tap, etc.

其主要由洗面盆，箱体，污水加压装置，单向阀，减压阀，水龙头等组成。

Force Analysis of Elastic Elements of the Switch Box in Pressure Thermal Controller and Its Application

压力式温控器开关盒弹性元件受力分析及其应用