Said aim is achieved by using a gas mixture of nitrogen and hydrogen as a test gas and inspecting the cooling circuit by means of a hydrogenprobe once a drop in pressure has been recorded.
It is the goal of these collaborations to probe the energy level structure of antihydrogen to compare it with that of hydrogen as a test of the CPT theorem.
探测反氢的能级结构把它与氢作比较如同一项CPT定理测试那样是这些合作的目标。
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The fracture of piston rod of new hydrogen compression pump is studied by metallography and electron probe in this paper.