Please polish the following paragraph according to the style of SCI journalsDuring the fire test the infrared thermal thermography was used to record the outer surface temperature of the ceiling Under

During the fire test, infrared thermal thermography was utilized to record the outer surface temperature of the ceiling. As the fire progressed, water and vapor overflowed from concrete cracks and covered the concrete surface, which was also detected by the infrared thermography. Consequently, the monitoring object of the infrared thermography gradually shifted from concrete to water as the outer surface of the ceiling was progressively covered by water overflowing from cracks. Correspondingly, the parameters of the infrared thermography required adjustment, particularly the emissivity of the measured object, i.e., water and concrete. As the ceiling was gradually covered by water, the emissivity of concrete in the infrared thermography was modified to that of water. The emissivity of concrete is 0.94, while that of water is 0.957. However, since the concrete surface was slowly covered by water during the fire test, an appropriate time was selected to modify the emissivity in the infrared thermography. The focus of the research was on the cracking of an immersed tunnel under fire, and thus, the emissivity in the infrared thermography was adjusted when the crack of the ceiling was filled with water, as shown in Fig. 5, which illustrates the crack of the ceiling and water on the ceiling. At 35 min, most of the cracks in the ceiling were filled with water, and the emissivity in the infrared thermography was adjusted to that of water (0.957). By 50 min, most areas of the ceiling surface had been covered by water.