The space ship was originally scheduled for lift-off on June 13, but was first postponed because of a leak associated with the hydrogen venting system outside the shuttle's external fuel tank.
奋进号"原定于6月13日发射，但因外部燃料箱某处有氢燃料泄漏而推迟了发射时间。
Fuel delivery with protection device to prevent tempering, owning venting mechanism to prevent the fuel deflagration in the furnace. Therefore the boiler is of safe and reliable operation.
燃料输送设计有防止回火的保护装置，有防止燃料在炉膛内爆燃的泄爆机构。因此锅炉运行安全可靠。
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