亚洲免费av电影一区二区三区,日韩爱爱视频,51精品视频一区二区三区,91视频爱爱,日韩欧美在线播放视频,中文字幕少妇AV,亚洲电影中文字幕,久久久久亚洲av成人网址,久久综合视频网站,国产在线不卡免费播放

        ?

        由肌肉組織驅(qū)動的兩足機(jī)器人問世

        2024-05-27 06:55:31藍(lán)利霞
        求學(xué)·理科版 2024年6期

        藍(lán)利霞

        “Research on biohybrid robots, which are a mixtureof biology and mechanics, is recently attracting attentionas a new field of robotics featuring biological function,”says corresponding author Shoji Takeuchi of the Universityof Tokyo, Japan. Muscle tissues have driven biohybridrobots to crawl and swim straight forward and maketurns.

        To build a flexible robot with fine and delicatemovements, the researchers designed a biohybrid robotthat imitates human walk and operates in water. The robothas a foam buoy( 泡沫浮標(biāo)) top and weighted legsto help it stand straight underwater.

        The basic structure of the robot is mainly madefrom silicone( 硅酮) rubber that can bend and stretch toadjust to muscle movements. Researchers then attachedstrips of lab-grown skeletal muscle tissues to the siliconerubber and each leg. When the researchers movedthe muscle tissue with electricity, the muscle tightened,hoisting the leg up. The heel of the leg then landed forwardwhen the electricity disappeared.

        By changing the electric stimulation between theleft and right leg every 5 seconds, the biohybrid robotsuccessfully “walked” at the speed of 5.4 mm/min (0.002mph). To turn, researchers repeatedly moved the rightleg every 5 seconds while the left leg served as a support.The robot made a 90-degree left turn in 62 seconds.The findings showed that the muscle-driven bipedal robotcan walk, stop, and make fine-tuned turning motions.

        Currently, researcher are manually moving a pair ofelectrodes( 電焊條) to apply an electric field individuallyto the legs, which takes time. In the future, by integratingthe electrodes into the robot, they expect to increase thespeed more efficiently. The team also plans to give jointsand thicker muscle tissues to the bipedal robot to enablemore complex and powerful movements. But before upgradingthe robot with more biological components, theteam will have to integrate a nutrient supply system tosustain the living tissues and device structures that allowthe robot to operate in the air.

        (材料出自Science Daily 網(wǎng)站,有刪改)

        1. What makes biohybrid robots swim?

        A. Biology.B. Mechanics.

        C. Foam buoy. D. Muscle tissues.

        2. What does the underlined word “hoisting” mean in Paragraph 3?

        A. Warming. B. Trapping.

        C. Lifting. D. Giving.

        3. What can be inferred from Paragraph 4?

        A. The biohybrid robot can be put into use.

        B. The biohybrid robot can make a turn slowly.

        C. The biohybrid robot can walk, swim and jump.

        D. The biohybrid robot can just move the right leg.

        4. What is the authors attitude to the bipedal robot with complex movements?

        A. Mild. B. Objective.

        C. Indifferent. D. Dismissive.

        參考答案

        1. D。解析:細(xì)節(jié)理解題。根據(jù)材料第一段的最后一句“Muscle tissues have driven biohybrid robots tocrawl and swim straight forward and make turns.”,我們可知,肌肉組織使得機(jī)器人會游泳。故選D。

        2. C。解析:詞義猜測題。根據(jù)材料第三段倒數(shù)第二句中的動詞“moved”“tightened”和最后一句中的“l(fā)anded forward”,我們可知,機(jī)器人處于走路狀態(tài)時,它的肌肉會收緊,促使腿抬起(hoist),然后著地。故選C。

        3. B。解析:推理判斷題。根據(jù)材料第四段的倒數(shù)第二句“The robot made a 90-degree left turn in 62seconds.”,我們可知,機(jī)器人在62 秒內(nèi)完成了左轉(zhuǎn)90 度的動作,這說明其轉(zhuǎn)得比較慢。故選B。

        4. B。解析:意圖態(tài)度題。根據(jù)材料最后一段的最后一句“But before upgrading the robot with morebiological components, the team will have to integrate anutrient supply system to sustain the living tissues anddevice structures that allow the robot to operate in theair”,我們可知,在為機(jī)器人升級更多的生物組件之前,研究團(tuán)隊(duì)必須整合出一個營養(yǎng)供應(yīng)系統(tǒng),以維持活組織和設(shè)備結(jié)構(gòu),使機(jī)器人能夠在空氣中運(yùn)轉(zhuǎn)。故選B。

        国产精品亚洲最新地址| 国精产品一区二区三区| 国产福利片无码区在线观看 | 一本一道AⅤ无码中文字幕| 少妇太爽高潮在线播放| 国产乱子伦精品无码专区| 99香蕉国产精品偷在线观看 | 亚洲av天堂久久精品| 亚洲乱码中文字幕综合久久| 国产精品泄火熟女| 猫咪www免费人成网最新网站| 最新国产精品精品视频| 白白色发布会在线观看免费| 亚洲熟妇无码一区二区三区导航 | 成人无码α片在线观看不卡| 久久国产偷| 中文字幕人妻少妇精品| 麻豆资源在线观看视频| 一本加勒比hezyo无码人妻| 视频国产精品| 按摩少妇高潮在线一区| 超碰97人人射妻| 色94色欧美sute亚洲线路二| 91久久精品人妻一区二区| 亚洲熟女少妇精品综合| 美女把尿囗扒开让男人添| 丰满人妻一区二区三区视频53| 久久久精品久久波多野结衣av| 国产高跟丝袜在线诱惑| 少妇下面好爽好紧好湿一区二区| 国产大片内射1区2区| 久久亚洲精品ab无码播放| 亚洲日产AV中文字幕无码偷拍| 91精品久久久老熟女91精品| 国产xxxxx在线观看| 精品无码久久久久久久久粉色 | 日韩人妻无码精品久久| 国产精品18久久久久久不卡中国| 少妇太爽高潮在线播放| 国产日韩av在线播放| 国产激情对白一区二区三区四|