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to phrases
prototype test
auto. 原型样机试验; 样品检验
avia. 样机试验
econ. 试制品试验
el.mach. 真机试验
hydroel.st. 原型试验
railw. 型式试验
space 初样试验
tech. 原体试验; 实船试验; 抽样试验
prototype test: 10 phrases in 5 subjects
Aviation3
Bridge construction1
Electric machinery1
Engineering geology2
Technology3