查询词典 convection zone

The sightline control strategy for bad measure precision is developed, and the control methods for vertical direction, approach direction and station keeping are presented.(2)The safe approach velocities are investigated for cuboid, sphere and cone keep out zone.(3)The design method for optimal trajectory under safety constraint is developed. The cone and cuboid keep out zone can be described using line constraint, and then optimal trajectory design can be translated to line programming problem under line constraint.(4) The design strategy of collision avoidance maneuver is discussed, and the collision avoidance scheme is analyzed for V-bar and R-bar approach.The control and trajectory safety in departure phase are investigated.

1提出了测量误差较大时平移靠拢段的视线控制策略，给出了横向、纵向和悬停的控制方法；(2)针对长方体禁区、球形禁区和锥形禁区三种禁区形式，研究了V-bar逼近和任意方向逼近的纵向安全速度计算问题；(3)提出了安全约束下的最优轨迹设计方法，将冲量和有限推力作用下的最优轨迹设计问题转化为线性规划问题，并给出了将锥形和方形安全区域约束转化为标准线性约束的公式；(4)探讨了紧急避撞机动的设计策略，分析了V-bar和R-bar接近的紧急避撞机动方案。

The Xinyang-Yuanlong large-scale shear zone belongs to the eastern part of Qilianorogenic belt,which is mainly known for a intracontinental rifting-small ocean basin coveredby Hongtubao-Huluhe metamorphism basaltic rock.In the north of the shear zone,detritalrock of Chenjiahe group sedimented in forearc basin and island-arc volcanics of Chenjiahegroup in late Ordovician and island-arc granites of Yanjiadian formation and Huangmenchuanformation outcrop in order.

新阳—元龙大型韧性剪切带以北属祁连造山带东段，发育有以红土堡—葫芦河变基性火山岩为代表的陆内裂陷—小洋盆，北侧依次出露有弧前盆地沉积的晚奥陶世陈家河群碎屑岩组、岛弧环境的晚奥陶世陈家河群火山岩及以阎家店、黄门川为代表的岛弧型花岗岩类。

Target zone both possess those merit of hard peg and float exchange rate regime, and can harmonize exchange rate policy and money policy and realize economy interior and exterior equilibrium, meanwhile it is accordance with china step-by-step reform policy, so target zone exchange rate regime is line with china reality of the day.

汇率目标区是中国金融进一步开放中比较合适的汇率制度，它兼具固定汇率制和浮动汇率制的优点，能协调汇率政策与货币政策，实现经济的内外均衡，也符合中国渐进式的改革发展道路。

The main activities and characteristics of the 5 faults in Yishu zone are analyzed in the paper. We rezoned the Yishu zone, and summed up the differences in their activities between different faults or different parts of one fault and their features.

本文在前人研究工作基础上，较为深入地分析了沂沭带5条断裂的主要活动规律及其特点，对沂沭带进行了新的分段，并归纳了沂沭带不同断裂之间、同一断裂不同段落之间的活动差异及其差异的基本特徵。

However, if you input a valid domain URL, and this stop error still occur, the cause for the problem is probably due to NS records for the name servers that is listed in the SOA for the zone is not defined in the DNS zone file, or not yet been propagated to public DNS resolvers.

不过，如果你输入一个有效的域名网址，和此Stop错误仍时有发生，引起的问题可能是由于NS记录为名称服务器是列在国家海洋局为区是没有定义的DNS区域文件，或尚未传播到公众的DNS解析器。

Primary reasons leading to dead-zone of variable displacement axial piston pump are analyzed,and negative effects of dead-zone on control performance are presented also.

分析了轴向柱塞比例变量泵死区的主要形成原因及对控制性能的影响。

We use the long packing element packer to plug the casing bore, in order to control the water intake of high peameabili-ty zone and improve the water intake of low permeability zone.

针对喇嘛甸油田葡Ⅰ1-2厚油层渗透率级差大，注入水无效循环现象严重的特性，提出了采用长胶筒封隔器封堵套管炮眼控制高渗透层吸水量的方法，从而提高低渗透层的吸水能力。

The objects were sam- pling from the age of 40 and over in the low stroke zone of Jinhong and contrasted with the high stroke zone of Shi Jia- zhuang and Changchun.

本文于1990年10月至1991年12月在中风高发区长春、石家在与低发区景洪对40岁以上中风高危人群进行了中风危险因素对比研究。

It is indicated that the radius parameter is insensitive to the spatial shape of the edge zone of source and is mainly affected by the size of the central zone of pions emitted in high energy heavy-ion collisions.

结果表明，半径参数主要取决于高能重离子碰撞中多数π介子产生的中间区域；对产生π介子的边缘区域的空间分布形状不敏感。

Aiming at characteristics of frigid zone in this paper, we developed and exploited three kinds of solar-energy preservation pigpens available for frigid zone.

本文针对北方地区冬季气候寒冷、持续时间长的特点，研制和开发了三种适应高寒地区的太阳能保温猪舍。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？