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。
Degradation of volatile chlorinated aliphatics by zero - valent iron 利用零价铁去除挥发性氯代脂肪烃的试验
Study on denitrification by synthesizing nanoscale zero - valent iron 纳米铁的制备及其对污染地下水的脱硝研究
Dechlorination of chlorinated aliphatic compounds by micro - scale al - zn - mg fe powders as advanced zero - valent iron 复合粉体降解水体中氯代有机物污染的研究
Discussion on the applicability of permeable reactive zero - valent iron barriers to the remediation of groundwater around a uranium tailings site 铀矿冶设施退役治理的国际交流与技术合作
Co contents will exist as zero - valent when it was prepared by thermal reduction . but it was not able to resist corrosion , either 用氢气在800高温下热还原的方法制备的co催化剂能够得到单质的co ,但是此催化剂的抗腐蚀性能也很差。
The mo catalyst and the co catalyst prepared by impregnation reduction did not have zero - valent metals , the catalysts were not able to resist corrosion 以硼氢化纳( nabh4 )为还原剂的浸渍还原法制备的mo 、 co催化剂并不能得到单质的金属,而且抗腐蚀性能不好。
On the basis of distinctions of verbal valency , verbs used within oracle inscriptions can be divided into the following four categories : zero - valent verbs , monovalent verbs , bivalent verbs and trivalent verbs 摘要甲骨文中的动词可以根据其配价的不同分成以下四类,即零价动词、一价动词、二价动词、三价动词。
In general , bu is used to negate non - verbs , zero - valent verbs and monovalent verbs , while though fu is often used to negate bivalent verbs and trivalent verbs , bu can also be used to negate these two verb types 一般说来,非动词、零价动词、一价动词要用不来否定,而二价动词、三价动词常用弗来否定,但也可以用不来否定。
This paper introduced the remediation on contamination with chlorinated organics in water and soil by zero - valent iron on the latest research results at home and abroad , discussed the mechanism and research state of the zero - valent iron remediating contamination with chlorinated organics , and analyzed the development trend in the field 摘要介绍了零价铁修复水土中含氯有机污染物的机理及目前国内外最新研究成果及现状,并分析了该研究领域的发展方向。