Study on fracture pattern of open surface - flaw in gabbro 輝長(zhǎng)巖中張開型表面裂隙破裂模式研究
Verification regulation of green sand mould surface hardness tester for castings 鑄造用濕型表面硬度計(jì)試行檢定規(guī)程
Preparation of drawings for optical elements and systems - part 12 : aspheric surfaces 光學(xué)元件和系統(tǒng)圖的繪制.第12部分:非球型表面
On the 128 degrees rotated , y - cut and x - propagation substrate of linbo3 , the interdigital saw transducer of 400um in electrode pitch and 100um in electrode strip is designed and fabricated by the technique of photolithography 在128度旋轉(zhuǎn), y向切割, x向傳播的linbo _ 3晶片上,設(shè)計(jì)、并用光刻技術(shù)制作了電極周期為400 m ,電極線寬為100 m的叉指型表面彈性波換能器。