查询词典 position buoy

In the process of laboratory study, oxycodone was prepared by oxidating thebaine at 6,14-position under oxydol, hydrodeoxidizing 7,8-position double bond and 14-position ether under palladium catalyst. Furthermore, N-methyl of oxycodone was isolated byα-chloro-ethyl chloroformate under anhydrous condition and protection of 14-position hydroxyl to obtain noroxycodone, which was further converted into methylnaltrexone by N-alkylation in presence of cyclopropyl bromomethane, then by isolating 3-position methyl of methylnaltrexone under boron tribromide, becoming hydrochloride to prepare target compound, natrexone hydrochloride.

实验室工艺方面，本文首先用双氧水氧化蒂巴因的6-位和14-位、在钯炭催化下加氢还原7-8位双键和14-位醚合成羟考酮，然后提出并优化了在无水和14-位保护的情况下，用氯甲酸-α-氯乙酯脱去羟考酮的N-位甲基合成去甲羟考酮，再用环丙甲基溴将去甲羟考酮的N-位烷基化合成甲基纳曲酮，最后采用三溴化硼脱去甲基纳曲酮的3-位甲基和成盐酸盐合成盐酸纳曲酮。

In the Xizhou dynasty to Xihan dynasty ,the physician's position was inferior than that of witch physician though they already had high social position. From the mid of Xihan dynasty to Tang dynasty, the physician's position is markedly went down and caused the negative influence to the development of medicine as Confucianism became the orthodox ideology of the feudal society. From Song dynasty to Yuan dynasty ,the dynasts paid high attention to medicine ,so the physician's social position was greatly upgraded ,which promoted the development of medicine . The position of physician in the Ming dynasty and Qing dynasty were unprecedentedly debased. It became a very negative factor to the development of medicine.

经过本课题研究认为：医生的职责在夏至西周时期是由巫医兼任的，巫医在当时有着极其显要的社会地位，并在一定程度上对医学的发展作出了相应的贡献；东周至西汉前期，随着医巫的分离，医生的社会地位较巫医有所下降，但仍有相当的地位，并且活动相对自由；西汉中期以后至唐五代，随着儒家思想成为封建社会的正统思想，这一时期医生地位明显下降，对医学的发展产生了消极的影响；宋金元统治者重视医学，医生社会地位大为提高，推动了此期医学的发展；明清时期医生社会地位空前下降，是这一时期医学发展的一个消极因素。

In the Xizhou dynasty to Xihan dynasty ,the physician"s position was inferior than that of witch physician though they already had high social position. From the mid of Xihan dynasty to Tang dynasty, the physician"s position is markedly went down and caused the negative influence to the development of medicine as Confucianism became the orthodox ideology of the feudal society. From Song dynasty to Yuan dynasty ,the dynasts paid high attention to medicine ,so the physicians social position was greatly upgraded ,which promoted the development of medicine . The position of physician in the Ming dynasty and Qing dynasty were unprecedentedly debased.

经过本课题研究认为：医生的职责在夏至西周时期是由巫医兼任的，巫医在当时有着极其显要的社会地位，并在一定程度上对医学的发展作出了相应的贡献；东周至西汉前期，随着医巫的分离，医生的社会地位较巫医有所下降，但仍有相当的地位，并且活动相对自由；西汉中期以后至唐五代，随着儒家思想成为封建社会的正统思想，这一时期医生地位明显下降，对医学的发展产生了消极的影响：宋金元统治者重视医学，医生社会地位大为提高，推动了此期医学的发展；明清时期医生社会地位空前下降，是这一时期医学发展的一个消极因素。

The equal distance 3-improved-coverage number of beacon sending position is presented according the acreage of ROI.Then a simple method is put forward to calculate the coordinates of the sending positions in rectangular ROI.Aiming at the shortage of the existent sequence algorithm,when beacon moves according to the path and emits RF signals at every position,the ant colony algorithm is applied to the position sequence so as to get the beacon sending position.Further,in this algorithm the sensors could work out their position with trilateration.

根据ROI面积给出了等距三重优化覆盖此ROI所需要的信标发射位置数量计算方法；随后对矩形ROI提出了一种简单的信标发射位置确定方法；针对现有的遍历发射位置点的路径遍历算法的不足，提出了一种新的应用蚁群算法的信标发射位置点的遍历算法，并利用该算法对基于三边测量方法进行传感器节点定位。

The buoy position can be tracked successfully and the considerable location precision is obtained by employing this method.

结果表明，该定位模型能够成功地跟踪浮标的位置，并具有较高的定位精度。

There is a wreck buoy in position 50 degrees 45 minutes north, 30 degrees 25 minutes west

在北纬 50 度 45分，西经 30 度 25分位置有一灯已熄灭的沉浮标。

There is a wreck buoy in position 50 degrees 45 minutes north, 30 degrees 25 minutes west unlit.

在北纬50度45分，西经30度25分位置有一灯已熄灭的沉浮标。

Because of the random drift of the buoy, its position needs updateing regularly in the course of the airborne and-submarine.

由於浮标的随机漂移，在航空搜潜过程中，需要定期对浮标的位置进行更新。

Warning: Part one: There is a wreck buoy in position 50°45′N 030° 25′W unlit.

警报： 第一部分： 50°45′N， 030°25′W 处标志沉船的浮标不亮了。

Reaching the approximate position of the first entrance buoy; or

a 运动员滑行到第一浮标后，开始做第一个花样动作时；或者

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。