An empirical formula for calculating the threshold dose is presented.
在实验的基础上给出了一个计算剂量阈值的公式。
Below the threshold dose level, no adverse events above the response at the control level which is called the background response occur, then background response also occurs at the threshold level.
当剂量水平低于这个门阀剂量水平时，该剂量水平下的反应要比控制剂量下的反应即背景反应低，并且本文假定该门阀剂量水平下的反应与背景反应相同。
If the dose of radiation exceeds a certain threshold level, then it can produce acute effects, such as skin redness, hair loss, radiation burns, and acute radiation syndrome (ARS1).
如果辐射剂量超过一定的阈值水平，那么它可以产生，如皮肤发红，脱发，辐射烧伤和和急性辐射综合症(ARS1)等急性影响。
The threshold level at which some kind of reaction can occur may be less than a thousandth of a potentially fatal dose, so where do you draw the line?
可能发生某种反应的临界值也许不到可能致命剂量的千分之一，那么，你在哪里划这条线呢？
Diagnosis should include history of exposure to radiation, which dose exceed the dose threshold, and typical clinical characteristics.
诊断时应有明确的射线接触史，并超过剂量阈值，出现典型的临床特征。
It is found that the change of threshold voltage value fits in exponential law with absorbed dose, which is caused by the effect of space charge and interface charge.
产生这种现象的原因是场效应管氧化物中的空间俘获电荷与吸收剂量近似成线性变化，对阈值电压变化和吸收剂量有近似线性的改变；
Deduced has been a relationship between the threshold voltage of MOSFET and the radiation dose rate.
计算了MOSFET阈电压与辐射剂量率之间的关系。
Tissue damage is a threshold process, each dose curve can be regarded as the threshold curve, degree of injury increases exponentially with distance attenuation.
组织损伤是阈值过程，每条剂量曲线可被视为阈值曲线，损伤程度随距离的增加呈指数衰减。
The writhing induced by acetic acid and the pain caused by formaldehyde were inhibited significantly, but the pain threshold was enhanced by GQ only at high dose in hot-plate test in mice.
GQ显著抑制小鼠醋酸诱导的扭体反应和甲醛性疼痛，大剂量时，能提高小鼠热板痛阈值。
Intracerebroventricular injection of extragenetic OABA significantly raised the pain threshold (PT) of mice, and this action app eared a dose-effect dependent relation.
脑室注射外源性GABA可明显提高小鼠痛阈，其作用呈剂量一效应依赖关系。
Intracerebroventricular injection of extragenetic OABA significantly raised the pain threshold (PT) of mice, and this action app eared a dose-effect dependent relation.
脑室注射外源性GABA可明显提高小鼠痛阈，其作用呈剂量一效应依赖关系。
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