The windows stood wide open in the heat; the garden lay in thick, soft shadow, where the pitchy shapes of trees could be discerned . 窗户在酷热的空气中敞开着；花园躺在又浓黑又柔和的阴影里，依稀可以辨出黝黑的树木形态。
2.
Ultrasonic has being attracted much attention gradually in fuel atomization because of some specialities of cavitation and infection on liquid flow . in the course of atomization of pitchy oil , especially , does it show greatly its advantage , but its material atomizational mechanism need research ulteriorly . the primary content of this thesis is about adding cantilever reed to effervescent atomizer so as to combine ultrasonic and effervescent . this thesis has discussed ultrasonic some mechanism , ultrasonic dynamical procreator , effervescent and liquid mucosity infection on atomization , at the some time we make some experiments and discuss atomization rule following some machinery parameter and run parameter so as to find some rule about ultrasonic atomization and to rich the research of ultrasonic atomization mechanism . all that will be beneficial to the design about ultrasonic atomization atomizer 超声波由于其空化机理及对液体的流变性影响等特性，在燃油雾化燃烧中逐步引起人们的重视，尤其在重渣油等高粘度液体的雾化过程中逐步显示出其优越性，但其具体的雾化机理还需要做进一步的研究在气泡雾化喷嘴基础加入悬臂式簧片哨，将超声波与气泡雾化相结合是本文讨论的主要内容本文从研究超声波的一些机理入手，讨论了超声动力发生器气泡雾化以及液体粘度对雾化质量的影响，并通过具体的实验，根据实验数据来讨论雾化质量随各种结构参数运行参数的变化规律，以便找到超声雾化的一些规律，丰富对超声雾化机理的研究，对超声雾化喷嘴的设计具有一定的指导意义。
