查询词典 ballast engine

The Domistic Ballast and the Life of Compact Fluorescent Lamps;2. With the technical development of active power factor correction, some circuits in the ballast s and its operation are introduced, which have been used in high pressure sodium lamp.

针对荧光灯电子镇流器和高压钠灯电子镇流器中功率因数校正技术的发展，总结了典型的有源功率因数校正应用电路，分析了电路的基本工作原理，并在高压钠灯镇流器中得到了应用。

Ballast inductor due to the need to participate in work, this product is only suitable for metal halide lamp inductance ballast-driven, energy-saving lighting sodium lamp.

由于需要镇流器电感参与工作，本产品只适合电感镇流器驱动的金卤灯、钠灯照明节能。

The ratio of the vertical load distributed between the arch rib and the tie beam of the two schemes is the same. For the integral girder deck scheme, the longitudinal beams and the deck slab of endure more axial force compared to the ballast girder deck scheme, especially to the deck slab with a conspicuous increase of the axial force and higher stress, and the tie beam endure less. The force-bearing characteristics of the cross beams under the integral girder deck scheme is obviously better than that of the ballast girder deck scheme, especially at the two ends of each cross beam.

在受力上，与道碴板桥面方案相比，整体桥面方案竖向荷载在拱肋和系梁之间的分配基本相同，混凝土板和纵梁分担的纵向力则相对更大，尤其是混凝土板，增幅较明显，应力水平整体较高，系梁分担的纵向力则得到减小，横梁的受力状况整体桥面方案明显优于道碴板桥面方案，特别是在梁端处。

The FD of tungsten filament lamps is 6 %～31 % and decreases withincreasing power. F or fluorescent lamps driven by magnetic ballast , the FD is 42 %～48 %; and 10 % by highquality electronic ballast .

用照度传感器对各种常用光源的波动深度进行测量，发现钨丝灯的波动深度为6%～31%，随功率的增大而下降。

Ballasts and Capacitors 21 镇流器和电容器 21.1 A ballast and starter or ignitor, when provided, shall be rated for the operation of the type and size of lamps involved and shall be electrically connected in accordance with the diagram or instructions on or with the ballast.

21.1镇流器和启动器或启辉器，应该相关类型和大小的灯泡相配，并且连线方式和镇流器上面的表或着说明书一致。

Stone ballast plays an important role in ballasted truck of railway. Ballast density and resistance are an important parameter for the analysis of track structure and it has close relations with rapid deterioration of the quality of the track geometry as well as the amount of work in railway track maintenance.

碎石道床是铁路有碴轨道结构的重要组成部分，其道床密实度、道床纵、横向阻力不仅是轨道结构分析的重要参数，并且与轨道几何形位劣化和轨道养护维修工作量有密切关系。

Pump out ballast water in ballast tanks.

排压载水舱的压载水。

Choose one ballast tank and record the time needed for filling /emptying fully when ballast pump running.

结合泵的运转，对各压载舱进行注水和排水效用试验。

The each ballast pump can serve for all ballast tanks.

心泵。此3 个压载管彼此相连，其目的是让每一个压载泵能服务于所有的压载舱。

The charge pump electronic ballast circuit which employs a charging capacitor and a high frequency AC source to implement the power factor correctionhas become an attractive topology for the ballast of the fluorescent lamp.

电荷泵式电子镇流器，采用充电电容和高频交流源，以实现功率因数校正，这已成为荧光灯镇流器中极有吸引力的电路拓扑。

Smoking cigarettes adds to the Computer Desk Computer manufacturer computer mouse Computer Computerized collar knitter machine Conduit Bodies construction board Container Bag Control Arm Cooking Thermometer general levels of air pollution as well as damaging our health.

吸烟不仅对健康有害，而且增加空气污染程度。香烟雾含有多种有害物质：不仅有致癌化学物质、有某种能阻止氧气进入血液的气体，还有引起血压增高、心速加快的被称为尼古丁的物质。

He is one of my favorite actors.

他是我最喜欢的男演员之一。