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- pin gear shaper针齿轮刨齿机
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- pin gear针轮
- pit gear矿井[井筒]设备
- piezoelectric high polymer earphone压电高聚合物耳机
- pitch gear径节齿轮(英制齿轮)
- pick-up gear钩取装置;吸取装置
- physiology of high altitude flying高空飞行物理学
- picture tube high voltage显像管高压
- pinion-and-rack steering gear齿轮齿条式转向传动机构
- picture with high definition in the corners四角清晰度高的图像
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- pinion-type steering gear齿轮式转向机构
- photoelectric high speed recording pyrometer光电高速记录高温计
- piston valve gear活塞阀机构
- physical chemistry of high polymers高分子物理化学
- pin type insulator for high voltage line高压线路针式绝缘子
- photoelectric precision encoder光电精密编码器
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- physical chemistry of high polymer systems高聚物系统物理化学
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