b30
b30-
Investigation of heat transfer and friction characteristics had been conducted at atmosphere pressure on B30 horizontal circularly-grooved tube .
在常压条件下对水平波槽管管外凝结换热及流阻特性进行了实验研究。
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A study of the fracture behaviour of b30 / qts clad plate welded joints
B30/QTS爆炸复合板焊接接头断裂行为的研究
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Using B30 paktong tubes in condenser , especially in air extracting area , can significantly prevent condenser tubes from corrosion .
在凝汽器特别是空抽区，采用B（30）白铜管可有效地防止凝汽器铜管的氨腐蚀。
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By means of the standard COD test , the fracture behaviour of B30 + QT steel clad plate specimens with various crack orientations are studied .
本文通过标准COD试验，研究了B30+QT钢复合材料的焊接接头中裂纹不同取向时的断裂行为。