志愿者

Now, volunteers are designing a pedal-powered grain crusher .

现在，志愿者们在设计一种踏板动力的谷物压碎机。

Now, volunteers are designing a pedal-powered grain crusher .

现在，志愿者在设计一个脚踏板的去谷机。

Now, volunteers are designing a pedal-powered grain crusher.

现在，志愿者正在设计一种脚踏式谷物碾碎机。

Now, volunteers are designing a pedal-powered grain crusher.

现在，志愿者们正在设计一种脚踏式的粮食压碎机。

Now, volunteers are designing a pedal-powered grain crusher .

现在，志愿者正在设计一种踏板动力的谷物粉碎机。

Now, volunteers are designing a pedal-powered grain crusher.

现在，志愿者们正在设计踏板谷物碾压器。

Now, volunteers are designing a pedal-powered grain crusher.

现在，志愿者们正在设计一种踏板发电谷物碾碎机。

Now, volunteers are designing a pedal-powered grain crusher.

现在，志愿者正在设计一种足踏的谷物碾磨机。

Now, volunteers are designing a pedal-powered grain crusher.

现在，志愿者正在设计踏板动力的谷物碾碎机。

Now, volunteers are designing a pedal- powered grain crusher.

现在，志愿者正在设计一种踏板式的谷物榨碎机。

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。