查询词典 previously

B The assignor has not previously assigned the receivable to another assignee; and

b 转让人此前未曾将该应收款转让给另一受让人；以及

The thermal boundary layer had previously been a part of the mantle that had been metasomatized and enriched by fluids/melts from the asthenosphere.

这种热边界层在发生岩浆作用之前是被来自软流圈深部的流体和/或熔体交代富集过的地幔。

The Silk Road gave rise to the clusters of military states of nomadic origins in North China, invited the Nestorian, Manichaean, Buddhist, and later Islamic religions into Central Asia and China, created the influential Khazar Federation and at the end of its glory, brought about the largest continental empire ever: the Mongol Empire, with its political centers strung along the Silk Road (Beijing in North China, Karakorum in central Mongolia, Sarmakhand in Transoxiana, Tabriz in Northern Iran, Astrakhan in lower Volga, Bahcesaray in Crimea, Kazan in Central Russia, Erzurum in eastern Anatolia), realizing the political unification of zones previously loosely and intermittently connected by material and cultural goods.

丝绸之路引发了由中国北部开始的游牧地区军队丛生，引发了景教、摩尼教、佛教，后期还有伊斯兰宗教进入中亚和中国，创造了有影响力的哈扎尔联盟。在它的显赫终结之时，带来了曾经是最大陆地面积的帝国：蒙古帝国，它的政治中心是沿着丝绸之路（中国北部的北京，蒙古中部的哈拉和林、河中地区的萨马卡罕、北伊朗的大不里士、伏尔加河下游的阿斯特拉罕、克里米亚的巴塞莎拉、中俄罗斯的喀山、安纳托利亚东部的埃尔祖鲁姆），意识到先前松散和被物质和文化商品间歇地连接的地区需要政治上的统一。

These include an asymptotic formula in a neighborhood of the origin,a result which as far as we are aware has not yet been obtained previously.

其中有一个在原点的领域附近的渐近公式。据我们所知，这个结果之前还没有被得到过。

The Americans had previously balked at the Israelis' suggestion of a deadline.

而在之前，美国在以色列要求的最后期限问题上可是支支吾吾的。

But enter on century since 80 time, below the concussion that waits for foreign cartoon in beautiful, day, gradually come out the aureola previously.

但进入上世纪80年代以来，在美、日等国外动画片的冲击下，渐渐褪去了以前的光环。

Based on the analysis of the mechanism of robot manipulators, a trajectory tracking controlling research model is first built up with ADAMS, and its mathematical model is formulated through the study of robot kinematics and dynamics. After the modeling errors are analyzed in practical robotic systems, a conception of centralized error is brought forward according to the theory of weighting functions. In the case of modeling errors' exist, the robotic uncertain model is derived by introducing an auxiliary control variable into inverse dynamic analysis. The control strategy of robust exponential convergence is applied to the robotic uncertain model, the applicable conditions and the applicable controller with this application are presented. The stable control effect under three main model uncertainties (parametric errors, joint disturbs, joint frictions) are systematically studied on the previously built research model. The problems of robust exponential convergence controller which often results in unstable output and so produces a large relative error when the input trajectory is in a small range are resolved by adjusting the control parameters based on the controller's structure.

本文在机械手的机械结构分析基础上，利用ADAMS建立了用于机械手轨线跟踪控制研究的机械手模型；通过对机器人运动学和动力学问题的研究，建立了机械手研究的数学模型；分析了机器人系统中模型误差的主要来源，根据加权函数法分析，提出了模型集中误差的概念；在存有模型误差的情况下，采用逆动力学结构并引入辅助控制量，由机器人误差模型推导了机器人非确定性模型；提出了采用鲁棒指数收敛法对上述机器人非确定性模型进行鲁棒镇定的控制策略，并给出了对机器人进行鲁棒指数收敛控制时系统不确定因素应满足的匹配条件；针对机械手研究模型，深入研究了鲁棒指数收敛控制器对机器人系统中常见的模型参数误差、关节扰动、关节摩擦等不确定因素的镇定控制效果；针对鲁棒指数收敛控制器易产生控制量振荡的问题以及在小范围内系统轨线跟踪的稳态误差过大问题，本文分别提出了基于控制器结构的控制参数调整法和基于轨线跟踪范围大小的控制参数分段切换法。

Beijing has not been reluctant to dive back into the price controls it abandoned earlier, particularly for food prices that had previously been almost completely liberalized.

北京已不愿重走早年尚已抛弃的对物价限制的路线，尤其是在对以前几乎完全自由的食品价格方面。

More than 90% of the total incidence of typhoid and paratyphoid were typhoid previously, as the widely use of Vi bacterin, in the middle of 90s in 20th century, the popular strain changed, in some provinces the cases of typhoid decreased, but that of paratyphoid increased largely, with the outbreak trend from spot to part and from inshore provinces to backland provinces. In recent years, paratyphoid becomes the main infectious diease in some areas, and ofen develop to serious epidemic situation. So setting up a rapid and accurate detecting metod is necessary.

以前我国伤寒发病占伤寒副伤寒总发病的90%以上，后来由于伤寒Vi疫苗的广泛使用，20世纪90年代中期，流行菌株发生转变，我国部分省份伤寒病例逐渐下降，而由甲型副伤寒沙门氏菌引起的副伤寒病例却大幅上升，并呈现由散发到局部暴发，由沿海省份向内地省份推进的流行趋势，近几年来成为我国一些地区传染病突发事件的主要病种，常发展成重大疫情，急需建立快速、准确的诊断方法。

The LED backlist LCD flat panel display is what makes a notebook to be extremely light compared with older version, and the specialized color options, a rare configuration options for Dell which favors "build-to-order" business model, is a step by Dell to boost sales by offering more personalization, comparing with previously rather dull and boring default box package choice.

LED的再版的LCD平板显示器，是什么使得笔记本电脑是非常轻相比，与旧版本，并专门色彩选择，一种罕见的配置选项，戴尔，其中主张"建立到秩序"的商业模式，是一个逐步戴尔为了促进销售，提供更多个性化，与以前比较，而不是呆板枯燥的默认方块包的选择。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。