zero n. (pl. zeros, zeroes) 1.【数学】零;零号。 2.零位;零点,起点;(温度表的)零度,冰点;座标原点;无。 3.最低点;【天文学】天底;【航空】零高度。 4.没价值的人[物]。 5.【军事】= zero hour. the absolute zero 【物理学】绝对零度〔-273.16℃〕。 the air zero 原子弹空中爆炸中心。 fly at zero 超低空(1000英尺高度以下的)飞行。 vt. 1.把(调节器等)调整到零位。 2.把…减少到零位。 zero in 1. 调整(枪炮的)射距,把(枪炮等的标尺)调整到标准无风部位瞄准。 2. 把(火力)对准目标 (on)。 zero out 给…以免税待遇(to zero out funding for public broadcasting 对用于公共广播的经费实行免税)。 adj. 1.零(度)的。 2.【气象学】云幕低于50英尺,能见度小于165英尺的。
Liu zhijun , to achieve a speed of 160 kilometers above the speed segments and zero death on the road outside 刘志军强调,要实现时速160公里及以上提速区段路外人员零死亡。
1 . " zero deaths on construction site " : in 2005 , 25 deaths were recorded on construction sites , it is hoped that " zero deaths " would be achieved in 2008 一地盘零死亡: 2005年全港共25人因地盘意外死亡,目标于2008年降至地盘零死亡
1 . " zero deaths in construction site " : in 2005 , 25 deaths were recorded in construction sites , it is hoped that " zero deaths " would be achieved in 2008 一地盘零死亡: 2005年全港共25人因地盘意外死亡,目标于2008年降至地盘零死亡
In complementary case , sufficient conditions for uniform persistence and extinction of the population are obtained by the theory of uniform persistence of infinite dimensional dynamical systems . especially for the model with equal diffusion coefficients and zero death rates , the global attractivity of the unique positive steady - state solution is proved . in substitutable case , sufficient conditions for uniform persistence and extinction of population are also ob 首先考虑了具有互补营养的扩散模型,得到了该系统中种群绝灭和一致持续生存的充分条件;并对营养和种群具有相同的扩散系数和种群零死亡率的模型,证明了该系统存在唯一的正平衡解,并证明了该平衡解的全局吸引性。