We use GRIN lens as collimating or focusing lens for transmission gas cell ,and a method that using cascaded GRINLens couple to increase the optical path length is presented. Using this method ,the detection sensitivity of the gas cell has been greatly increased.

利用自聚焦透鏡作為光纖準(zhǔn)直透鏡和聚焦透鏡，應(yīng)用于透射型氣室久精品91区热，并提出了在透射式氣室中將多對自聚焦透鏡組串聯(lián)用以增加吸收光程的方法2021国产精品一区二区在线，用該方法可以明顯提高氣室的檢測靈敏度。

As I looked up to answer her, she flashed that cheesy grin that usually precedes a spontaneous "crack-up".

我抬起頭來看她黄色网站A级，她又朝我做出了那個(gè)通常能讓我不由自主大笑的笑容美女爽爽爽快快AAA。

In addition to the usual aluminum oxide wheel and general grinding condition, artificial diamond wheel, cubic boron nitride wheel and two variations of grin ding condition were also used in the test.

在磨削試驗(yàn)中91麻豆国产福利精品，除按照生產(chǎn)中常用的剛玉砂輪及常用的磨削條件外人人摸人人搞人人射，還用了人造金剛石砂輪99这里都是精品、立方氮化硼砂輪及其相應(yīng)的磨削條件一级a爱大片免费观看。

Finally I glanced up at Michael. He was sitting there in a red shirt, bopping to the music with this big, happy grin on his face. I saw him turn to the person next to him and say something.

最后我才瞥向michael黄色片在线视频，他穿了件紅襯衫坐在那里在线免费观看aⅴ，跟著音樂打著節(jié)奏国产熟女老妇乱视频，臉上帶著快樂的神情咧著嘴笑著在线国产福利网址。

Finally I glanced up at Michael. He was sitting there in a red shirt, bopping to the music with this big, happy grin on his face. I saw him turn to the person next to him and say something.

最后我才瞥向michael久久久久久AV无码免费网站动漫，他穿了件紅襯衫坐在那裏，跟著音樂打著節(jié)奏五月综合婷婷久久狠狠，臉上帶著快樂的神情咧著嘴笑著二色aⅴ国产热。

They're his civvies and he gets a wicked grin on his face as he puts them on.

他們是他的平民，而且當(dāng)他欺騙他們的時(shí)候日韩午夜在线看导航视频网站免费下载，他得到在他的臉上壞露齒笑免费一级A片视频播放欧美。

His friend had the biggest, creakiest grin on his face.

他的朋友臉上洋溢著燦爛的笑容。

Also you don t have a choice but to grin and bear it because you don t want to demotivate or offend the guest of honor.

您也不要噸是有選擇的毛片视频免费观看视频大全，但露齒而笑在线性国日韩，并承擔(dān)它，因?yàn)槟悴灰獓嵰猟emotivate或得罪客戶的榮譽(yù)稱號二级黄色网站免费在线。

When his eyes locked on mine, I saw the light bulb flash overhead as a grin spread across his face.

當(dāng)吉姆把目光鎖定在我身上時(shí)黄色1级视频，我彷佛看到他頭頂上方出現(xiàn)一個(gè)閃光的燈泡，他咧嘴笑了起來αv中文字幕在线毛片免费。

Jascha Franklin-Hodge, 29, greeted me with a friendly handshake and a gap-toothed grin.

29歲的杰西卡·富蘭克林·霍奇友好地跟我握手欧洲免费多人疯狂，裂嘴一笑，迎接我婷婷久久高清国外AV免费。