After the fabrication of the U type tubular mode heat exchanger core is completed, the shell side hydro-test shall be performed in order to protect the joints of the tube and the tube from leakage.
U型管式换热器芯子制作后应进行壳程水压试验，以确保管接头及管不泄漏。
The Olympic Stadium is now starting to take shape, with the outer shell that will support the fabric roof and upper tier of seats already completed.
奥运会主场馆已具雏形，支撑纤维结构屋顶的外壳和上层座椅已经完工。
The Olympic Stadium is now starting to take shape, with the outer shell that will support the fabric roof and upper tier of seats already completed.
奥运会主场馆已具雏形，支撑纤维结构屋顶的外壳和上层座椅已经完工。
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