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institute
n.(研究)所
The research institute is among the top five in geophysics in the world.
该研究所位列地球物理学前五。
invent
v.发明(creat, originate)
It is said that Edison invented the light.
据说是爱迪生发明了电灯。
launch
vt.发射，投射(send off);使升空
The new civilian satellite was launched yesterday.
这颗新民用卫星是昨天发射的。
mechanical
adj.机械的
precise
adj.周密的，精确的(accurate,exact)
precision
n.精确，精密度(accuracy, exactness)
scale
n.规模;尺度
The idea of the scale of economies was accepted by most people these days.
如今，大多数人都接受了经济规模的概念。
specimen
n.标本，样品(sample, instance)
symbolic
adj.象征的，符号的(token)
tentative
adj.试验性的(trial)
Tentative measures have been taken by the government to deal with weapons of mass destruction.
政府已采取一些初步措施来应付大规模毁灭性武器。
theoretical
adj.理论的(academic)
threshold
n.阈值;门槛(doorsill)
trial
n.试验 adj.试验性的
The trial of the machinery was successful.
机器试验成功了。
assumption
n.假定
Their assumption that their project under way was something entirely new proved to be untrue.
他们设想正在进行的项目是全新的，但结果证明不是。。
hypothesis
n.假设
This is only a sort of scientific hypothesis which has not been proved by experiments.
这只是一种没有经过实验证明的科学假设。
