一外壳(30)封闭开口(18)并包围柱塞(25)的内部，由此在泵本体(11)和外壳(30)间限定一增压室(33)。
A sheath (30) closes the opening (18) and embraces an inner portion of the plunger (25), whereby pumping chamber (33) is defined between the pump body (11) and the sheath (30).
理论分析和试验结果均表明：燃烧室增压速率、脱粘面尺寸、边界条件等因素对脱粘面扩展均有较强的影响。
Theoretical analysis and experiment results prove that the chamber pressurization rate, the debond dimension and the boundary condition have strong effects on the propagation of the debond.
验证了为增压流化床锅炉特制的启动系统中带有气封结构的风室的可靠性。
An innovative wind box is designed especially for the PFB boiler, and its reliability of gas sealed configuration in the start up system is testified.
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