Scan direction - in the flatness calculation , the direction of the subsites 掃描方向-平整度測(cè)量中,局部平面的方向。
The choice of scanning direction of multi - angle thermal infrared remote sensing 關(guān)于熱紅外多角度遙感掃描方向的選取問(wèn)題
Crops sown in line ; the directional characteristics of thermal radiance ; scanning direction 行播作物熱輻射方向特性?huà)呙璺较?i class="labawb" onClick="playMp3('sound_c_3')">
Some electro - optical crystals can result in birefringency when they are pressed by electric field , by controlling the intensity of the electric field , we can change the phase of the output optical beam , so the desired scanning direction can be got 它主要是利用某些電光晶體在電場(chǎng)的作用下,可以產(chǎn)生雙折射的原理,通過(guò)控制加在光學(xué)相控陣中各相控單元兩極間的電場(chǎng)強(qiáng)度,可以改變出射光的相位,從而得到所需角度的掃描。
( 3 ) there are many flaws in direct laser metal sintering , such as the high remnants stress , micro - hole and micro - crack in sintering parts . in order to solving those problems , the programming of scanning paths is put forward , and several parts are prepared with different scanning paths respectively . the following conclusion is educed : the parts produced with short - side scanning path and same scanning direction have the minimum structure , the rigidity of parts prepared by short - side and same direction scanning path is highest , and the density of parts produced with the vertical scanning path is maximal ( 3 )針對(duì)采用大功率激光直接燒結(jié)鎳基高溫合金成形金屬零件存在的問(wèn)題,如較大的殘余應(yīng)力,制件中存在著微裂紋、微孔洞等缺陷,初步提出掃描路徑的規(guī)劃,并采用幾種不同的掃描方式進(jìn)行燒結(jié)試驗(yàn),發(fā)現(xiàn)采用短邊掃描路徑和同向掃描能夠獲得更加細(xì)小和分布均勻的組織結(jié)構(gòu),采用短邊同向路徑制備的試樣其顯微硬度最高,而采用變向掃描(垂直)路徑制備的試樣致密性最好。