皱缘

Culm sheaths purple-brown or green-brown, usually alternating with pale and darker stripes, with sparse small brown spots or cloudy brown blotches, margins usually dark brown; auricles and oral setae absent; ligule dark purple brown, truncate, 2–3 mm, margin ciliolate; blade spreading to reflexed, purple-green with yellow margins, linear-lanceolate to linear, flat or sometimes weakly crinkled.

与更苍白并且黑的条纹或绿色棕色，通常交替的竿箨紫褐色，带有稀少小的棕色的点或者多云的棕色的大块斑点，边缘通常暗褐色；叶耳和口头的刚毛无；叶舌深紫色棕色，削去，2-3毫米，边缘具短缘毛；叶片开展到反折，紫色绿色具黄边缘，线状披针形到线形，有时身体虚弱皱曲的平或。

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。