E. coli is so well known primarily because it is easy to work with in the laboratory.
大肠杆菌之所以如此的重要，是因为它易于实验室的研究。
According to the current situation of super-long pile groups, i. e. more application and less theoretical studies, a large-scale laboratory model test is conducted.
针对超长群桩使用较多而理论研究较少的现状，进行了大型的室内超长群桩模型试验。
The Electrolytic Cation Exchange Module, or E-CEM for short, has been under development by the US Naval Research Laboratory.
电解阳离子交换模块，简称e - CEM，该项目一直由美国海军研究实验室开发。
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