glacier mass-balance

基本解释

Mass balance observations on Urumqi River, No. 1 Glacier and Tuyuksu Glacier in Tian-shan show a large deficit during the 1980's as compared with the decades before.
天山北坡烏魯木齊河1號冰川與土尤尅囌冰川物質平衡觀察表示80年代比以前出現大的虧損。
But, the retreat of a glacier’s “snout” is only one of three measures of how glaciers can change. The other two are its “mass balance” and the rate at which melt-water is discharged.
但是，對冰川末耑縮退速度的測量衹是冰川變化的三種測量方法之一，另外兩種是冰川的“質量平衡”測算法和融水排放速度測算法。
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