overburden是什么意思？

overburden

英[ˌəʊvəˈbɜ:dn] 美[ˌoʊvərˈbɜrdn]

• vt. 装载过多，负担过多，使过劳；
• n. 过重的负担；

第三人称单数：overburdens;

过去式：overburdened;

过去分词：overburdened;

现在分词：overburdening;

例句

• Overburden pressure for three hundred years , isolated the light of day. 覆压三百余里, 隔离天日.
• Soil survey should be adopted in such soil overburden areas. 在此类土壤覆盖区应采用土壤测量.
• Overburden had concealed the radioactivity. 覆盖层屏蔽掉了放射性.

英英词典释义

• Noun
  1. the surface soil that must be moved away to get at coal seams and mineral deposits
  2. an excessive burden
• Verb
  1. burden with too much work or responsibility
  2. load with excessive weight

行业词典

• 体育： 使过劳；使负担过度；
  土木工程： 覆盖层；
  煤炭： 剥离物；"又称 :剥离物(spoil,waste) "；露天采场内的表土、岩层和不可采矿体。；