zero n. (pl. zeros, zeroes) 1.【數(shù)學】零;零號。 2.零位;零點,起點;(溫度表的)零度,冰點;座標原點;無。 3.最低點;【天文學】天底;【航空】零高度。 4.沒價值的人[物]。 5.【軍事】= zero hour. the absolute zero 【物理學】絕對零度〔-273.16℃〕。 the air zero 原子彈空中爆炸中心。 fly at zero 超低空(1000英尺高度以下的)飛行。 vt. 1.把(調(diào)節(jié)器等)調(diào)整到零位。 2.把…減少到零位。 zero in 1. 調(diào)整(槍炮的)射距,把(槍炮等的標尺)調(diào)整到標準無風部位瞄準。 2. 把(火力)對準目標 (on)。 zero out 給…以免稅待遇(to zero out funding for public broadcasting 對用于公共廣播的經(jīng)費實行免稅)。 adj. 1.零(度)的。 2.【氣象學】云幕低于50英尺,能見度小于165英尺的。
Research on transient process of rlc second order circuit under sinusoidal excitation and non - zero state 正弦激勵非零狀態(tài)下的二階電路暫態(tài)過程的研究
Beam string structure needs determine the initial geometry in zero state and initial prestressing force distribute geometry before analysing . this text pointed out the difference from determining the shape of bss to form - finding or force - finding of membrane structure 張弦梁在受力分析前需要確定其零狀態(tài)放樣幾何及初始預應力分布。本文論述了張弦梁結構的形狀確定與膜結構的找形或找力分析的區(qū)別。
Then by a decomposition method , we proved that every state in the decentralized controllable subspace could be conducted to zero state by time - varying decentralized control , which meant that the decentralized controllable subspace had similar property with centralized controllable subspace 接著,我們用一種逐步分解逼近的方法證明了分散能控子空間中的每一個狀態(tài)都是分散能控的,這說明分散能控子空間和集中能控子空間有類似的性質(zhì)。
A new method named inverse analysis of construction process is proposed to determinate the ideal status in each step of construction , including internal force and the coordinate of points . from the initial value that is the internal force and the geometrical coordinate of the initial state , according to the construction sequence to remove the cable - strut tensile structure , it can determinate the zero state of the structure 該方法從弦支穹頂結構設計理想成形狀態(tài)(初始態(tài))出發(fā),以成形時索、桿內(nèi)力和幾何狀態(tài)為初值,按照一定施工順序依次拆除各圈索桿,從而確定各個階段的結構施工控制參數(shù)(包括索力和坐標) ,最終確定結構的零狀態(tài)。
The clamping diodes conduct only once in a switching period , and the resonant inductance current is smaller in zero state , leading to a higher efficiency and reduced duty cycle loss . the operation principle of the improved converter and the comparison with the original converter are analyzed in this paper . the effect of the blocking capacitor in series with the transformer or resonant inductance is discussed , and a best scheme is determined 本文將諧振電感和變壓器交換位置,使變壓器與滯后橋臂相連,這樣箝位二極管在一個開關周期中只導通一次,同時零狀態(tài)時諧振電感電流較小,有利于提高變換效率和減小占空比丟失,本文分析改進后變換器的工作原理,并與改進前的變換器進行對比,討論隔直電容在不同位置對變換器工作的影響,確定一種最佳工程方案。
Over many years , the china ' s academic world has made research into the improvement on the city social security system , of course , with more success , yet , to some degree , neglecting its equivalent in rural areas . so , practically speaking , rural social security system is in an imperfect or zero state in our country . for example , some social security items , such as old - age pension , medical insurance , industrial injury insurance and birth insurance etc . , have rural residents excluded 長期以來,我國學術界在理論上對城市社會保障問題比較關注,研究成果也比較多,而對占全國總人口70的廣大農(nóng)民的農(nóng)村社會保障問題則重視不夠,研究得也很不深入,以致在實踐上使我國農(nóng)村社會保障始終處于不完善甚至空白的狀態(tài),有相當部分社會保障的內(nèi)容(如養(yǎng)老保險、醫(yī)療保險、工傷保險、生育保險等)將整個農(nóng)村人口排擠在外。