The turbulence kinetic energy and crushing strength is increased with the increasing of squish area.
适当增大挤气面积，可增大逆挤流强度，提高缸内湍流动能，促进火焰传播。
Valves are clustered near the center of the bore to minimize combustion chamber volume and to provide ample squish area.
阀门是聚集在附近的孔中心，以尽量减少燃烧室量，以及提供足够的果酱领域。
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