1.In order to solve problems existing in current measuring methods for radon exhalation rate (such as the effect of unequilibrium Radon and its progeny, humidity effect, leak and back-diffusion effect, etc.), based on the principle of surveying radon and its progeny in the medium surface, a rapid arid accurate method for measuring radon exhalation rate taking advantage of the RAD7 radon detector was established.
摘要本文根据介质表面氡析出率的测量原理，针对目前国内外现有的氡析出率测量方法中存在的一些问题，如对氡及其子体的不平衡影响、湿度效应及泄漏和反扩散等影响未作修正等，实验研究了一种用RAD7型氡气检测仪快速测定土壤、岩石、建材和尾矿等介质表面氡析出率的方法。
2.The apparatus is applied to the measurement of the radon concentration in the environment and the radon exhalation from the surface of the building materials, walls and ground. The lower detection limit is about 4 Bq/m3 for 222Rn concentration and 5X10-5Bq/s/m2 for 222Rn exhalation rate.
该仪器可用于环境中氡浓度的连续测量以及地面、墙壁、建筑材料表面析出率的测量,也可用于钍矿区浓度和析出率的测量,该仪器对氡浓度和氡析出率的灵敏度分别为4Bq/m~3和5X10~(-5)Bq/s/m~2。
3.Data of ~(222)Rn exhalation rate at 136 sites leads to the factthat ~(222)Rn exhalation rate appears log-normal distribution. 25 and 75percentages are 1.6 and 12 mBq·m~(-2)·s~(-1) respectively;
136个测点数据表明,氡的析出率呈对数正态分布,第25位和第75位百分位数分别为1.6和12mBq·m~(-2).
4.When the pressure in the tank is balanced with the atmospheric pressure, the exhalation valve flap of the respiration valve is closely cooperate with the exhalation outlet valve seat, the inhalation valve flap is closely cooperate with the inhalation outlet valve seat.
当储罐内压力与大气压力平衡时，呼吸阀呼出阀瓣与呼出口阀座严密配合，吸入阀瓣与吸入口阀座严密配合。
5.In addition, they exchange more air with each inhalation and exhalation.
另外，随着每次吸人和呼出，它们交涣更多的空气。
6.An organ, such as the siphon of a clam, that is used for exhalation.
发散管用于蒸发或发散的器官，如蛤的发散水管
7.Regularly check whether actions of inhalation, exhalation discs are flexible, and the sealing contact surface of leader and disc is damaged, if so, should be replaced immediately.
定期检查吸入、呼出阀盘动作是否灵活，导杆及阀盘接触密封面有无损坏，如有损坏应立即更换。
8.The research results is as followed: (i) The west QinLing had grown rift at Devonian period in the HaiXi movement, which produced exhalation of the hot water of bottom of sea, forming sedimentation-type lead-zinc ore layer and gold-hosted clastic sediment;
本论文的研究成果和认识有：确定了西秦岭在泥盆纪海西运动时发育了相当规模的裂谷构造，产生了海底热水喷流作用，形成了沉积型铅锌矿层和含金碎屑岩层；
9.Take a full inhalation and exhalation after each reading.
每次读的时候做一次完整的呼气和吸气。
10.On the basis of distribution of radioactive elements and geological background , the theory equation of radon exhalation rate is derived from the decay rule of radioactive elements and gas diffusion.
根据放射性元素分布规律、地质背景及放射性元素衰变等，建立了计算氡析出率的理论公式。
