塔钟

This paper introduces working principle of tower clock control system in detail from two aspects of hardware and software.

摘要从硬件和软件两个方面详细介绍了塔钟控制系统的工作原理，并阐述了设计中所采取的一些有效的抗干扰措施。

Haliotis asinina (Linnaeus, 1758), Tectus niloticus maximus (Philppi, 1844), Tectus pyramis (Born, 1778), Turbo argyrostomus Linnaeus, 1758, Turbo chryostomus (Linnaeus, 1758), Hippopus hippopus (Linnaeus, 1758), Tridacna maxima (Roeding, 1798), could be found but were in low abundance.

此外，东沙岛的大型经济性软体动物种类也不少，但数量都不多，本次纪录到的种类有驴耳鲍、马蹄钟螺、银塔钟螺、金口蠑螺、银口蠑螺、菱硨渠蛤、长硨渠蛤……等。

Haliotis asinina (Linnaeus, 1758), Tectus niloticus maximus (Philppi, 1844), Tectus pyramis (Born, 1778), Turbo argyrostomus Linnaeus, 1758, Turbo chryostomus (Linnaeus, 1758), Hippopus hippopus (Linnaeus, 1758), Tridacna maxima (Roeding, 1798), could be found but were in low abundance.

此外，东沙岛的大型经济性软体动物种类也不少，但数量都不多，本次纪录到的种类有驴耳鲍、马蹄钟螺、银塔钟螺、金口蝾螺、银口蝾螺、菱砗渠蛤、长砗渠蛤……等。

This paper introduces working principle of tower clock control system in detail from two aspects of hardware and software.

从硬件和软件两个方面详细介绍了塔钟控制系统的工作原理，并阐述了设计中所采取的一些有效的抗干扰措施。

WEIGHT DRIVEN TOWER CLOCK MOVEMENT—Many find it a challenge to build a clock that drives hands exposed to the weather.

重量驱动塔钟运动，许多觉得是一个挑战，以建立一个时钟驱动器的手接触到的天气。

And the tower bells chime,'ding dong' they chime

大塔钟报时了，叮当，它们报时

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。