1) snow cover frequency
雪盖频率
2) snow cover extent (%)
雪盖率(%)
3) snow fraction
雪盖率
1.
The most popular retrieval algorithms are derived mainly from regression techniques using the normalized difference snow index(NDSI),but these methods are in low precision where the snow fraction is near 1 or 0.
目前较常用的积雪覆盖率算法主要是利用雪盖率与雪盖指数(NDSI)间的关系建立统一的回归模型,但这种方法在完全雪盖区及稀疏雪盖区的反演精度较差。
4) frequency coverage
频率覆盖
1.
This paper describes the principle and method of expanding LC VCO frequency coverage by weighted capacitor-coding method.
本文介绍用权电容编码方法展宽普通LC压控振荡器频率覆盖的原理和技术。
2.
Based on the criterion of avoiding the loss of the effective spatial-frequency information,the restrictive conditions of the spatial arrangement are calculated,and then the effective frequency coverage range and the equivalent aperture are obtained.
根据避免有效频率信息丢失的原则,分别计算了三种结构各自对应的空间排布限制条件,在此基础上得到了三种结构的有效频率覆盖范围和等效孔径。
5) percent snow of river basin
硫积雪覆盖率
6) snow cover
雪盖
1.
Changes in contents of MDA and osmoregulatory substances during snow cover for Pyrola dahurica;
兴安鹿蹄草(Pyrola dahurica (H.Andr.) Kom.)雪盖前后丙二醛及渗透调节物质含量的变化
2.
Now it is possible tomonitor snow cover in the large area.
融雪水在水资源利用中扮演着及其重要的角色 ,遥感技术的发展使得大面积监测雪盖成为可能 。
3.
They also are significantly affected by local environmental factors such as vegetation,snow cover,sand cover,and surface water/moisture conditions.
青藏高原冻土区地温既受海拔、纬度和经度(干燥度)区域地带性规律控制,同时它又受植被、雪盖、砂层、水被和地质构造等局地因素的显著影响。
补充资料：频率计量(见时间频率计量)
频率计量(见时间频率计量)
frequency metrology: see time and frequency metrology
口n IQ liliang顷率频率计皿(f比quency metrolo盯) 计t。见时闰
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条