微小系统

It was there, a half billion years ago, that tiny metazoan organisms first evolved systems for sequestering and circulating fluids.

五亿年前，就是在那里，微小的后生动物首先进化成与外隔绝的循环液体系统。

Taking precise microminiature mechanical systems as assembly objects, the reconfigurable 12 degree of freedom microassembly technology and realization method are systematically proposed, including modules such as 6-DOF macro-robot, 6-DOF precise micromotion worktable, micro gripper integrated micro detection and feedback, and micro pose detection device, and so on.

以精密微小型机械系统为装配对象，提出了可重构12自由度微装配技术和实现方法，具体包括6自由度宏动机器人、6自由度精密微动工作台、集成微力检测与反馈的组合式微夹持器和位姿检测装置等可重构模块。

It is thus seen that to package and miniaturize a complicated optical system into a single blook of crystal is possible.

由此表明把一个复杂的光学系统微小化组装在单块的晶体中是可行的。

In space microgravity environment, the platform consisted of two-axis system and small-satellite has properties as follow: attitude disturbance, redundancy, nonholonomic constraint.

太空微重力环境下，二轴系统和微小卫星组成的平台具有：姿态干扰性、跟踪冗余性、动力约束非完整性。

The dissertation is based on the project of the System for Electret Condenser Microphone Performance Test, and adopts automatic visual inspection technology to solve the problem of micro volume accessory's angle detection and polar recognition.

本文以驻极体麦克风在线综合性能测试系统为背景，采用自动视觉检测技术解决微小体积零件表面角度测量和正负极性识别的问题。

The image characteristics of circular structured light stripe in a micro-object inner surface vision inspection system are analyzed and the false stripes can be divided into two kinds of diffuse reflection and regular reflection.

分析微小物体内表面视觉检测系统中圆形结构光光条图像特徵，将干扰光条分为漫反射和镜面反射两类。

By designing an acquiring system of real-time stripe image from single slit diffraction and conversing the deflection to the change of width of single slit,this paper realizes the measurement of tiny displacement of girder during the period of bending and demonstrates the validity and practicality of this new method.

设计了一套单缝衍射条纹图像实时采集系统，通过把挠度转换为单缝宽度的变化，实现了对梁弯曲时微小位移的测量，并用实验证明了该方法的有效性和实用性

Pelagic tunicates are an important group of zooplankton in the subtropic and tropic waters. Distribution and variation of their species richness and abundance are influenced by physical and biological factors. Pelagic tunicates play an important role in marine food web carbon cycle as they feed on bacterioplankton and pico-and nano-phytoplankton and meanwhile are preys for commercial animals.

浮游被囊动物是热带和亚热带海域重要的浮游动物类群，种类和数量的分布变化受物理和生物环境因素的影响；它一方面大量摄食浮游细菌和微小浮游植物，另一方面被一些经济动物摄食，因此在海洋食物链的传递和生态系统的物质循环中占有重要位置。

Design, fabrication and test of the micro thruster were introduced in this thesis.

微推进器是一种基于MEMS技术的新型微推进系统，主要用于微小型航天器的位置保持、姿态控制、轨道调整等。

The onset voltage for the operation of the micro thruster was then proposed based on the maximum field strength.

姿态控制用微推进系统是微小卫星，尤其是10公斤以下的微卫星研究的薄弱环节。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。