The investigation of a lot of parameters about treated sandstone, brick materials and earthen materials with fluorited polymers has been carried out, such as the formation of polymer, the penetration depth, porosity, capillary absorption and penetration coefficient, water uptake, compressive strength, drilling resistance, absorption isotherms of water vapor, water vapor diffusion, color changes as well as resistance to desegregation of water, frizzing - throwing cycles, worming - cooling cycles, and so on. in addition, the influence of salt crystallization, acid and base, and uv aging have also been assessed in order to better understand the protection effects and utilization possibility of two fluorinated polymers, mainly according to astm standard and the combination of international methods together with general technological
分別以國家級文物保護單位的土質、砂巖和磚材文物樣品為對象,依據astm標準及國際通用文物保護研究方法與評估準則相結合,通過膠化物形成周期、滲透深度、孔隙度、毛細吸水和滲透系數、持水量、抗壓強度、抗鉆強度、吸附水蒸
氣的能力、透
氣性、外觀顏色等系列參數的測定,及凍融、冷熱循環、酸堿腐蝕后抗壓強度的衰減、可溶鹽對保護效果的影響、酸堿及光照對表面保護效果的影響,對兩種含
氟聚合物及其與有機硅的共混物在文物加固保護和表面防護中的可行性和保護效果給予了系統研究。
Determination of residues of fumigant sulfonyl fluoride in cereals by headspace gas chromatography
糧食中熏蒸劑硫酰
氟殘留量的頂空
氣相色譜測定
Standard test method for acetone, methyl acetate, and parachlorobenzotrifluoride content of paints, and coatings by solid phase microextraction - gas chromatography
用固相微提取
氣相色譜法測定顏料和塗料中丙酮甲基丙酮對位氯苯三
氟化物含量的標準試驗方法
Flumiclora - pentyl was prepared from p - fluorophenol as starting material via several steps such as chlorination, nitrification, reduction and condensation. the yield of the product was 50 %, and the purity was higher than 97 %
摘要以對
氟苯酚為原料,首先與氯
氣發生反應,生成2 -
氟4 -氯苯酚,再經過硝化、還原、縮合等幾步反應得到
氟胺草酯,反應總收率達到50 % ,產品純度大於97 % 。
In these two studies by the same japanese group ( 7, 8 ), the enhanced pressor effects of ephedrine and phenylephrine following an alpha 2 agonist ( clonidine ) were no different between awake and anesthetized ( enflurane and nitrous oxide in oxygen ) patients
在這兩個研究中[ 7 , 8 ] ,麻黃素和苯腎上腺素在使用- 2受體激動劑(可樂定)后的升壓效果增強在清醒和麻醉(安
氟醚和笑
氣)病人沒有差別。
Standard test methods for analysis for fluoride content of the atmosphere and plant tissues semiautomated method
大
氣和植物組織中
氟化物含量分析的標準試驗方法
Standard test method for separation and collection of particulate and gaseous fluorides in the atmosphere sodium bicarbonate - coated glass tube and particulate filter method
大
氣中粒狀物和
氣態
氟化物分離及收集的標準試驗方法
The factory is specialized in the manufacture of the whole set of testing equipment fo gas - vase ( do not sew, fuse, liquefied petroleum gas, natural gas etc. spirit bottle ), various air infuses set, remitting to flow row and to infuse tongs ; the stainless steel is four fluorine soft tubes, the industrial air ( the pack ) gathers to pack, modernizing industrial factory premises concentration to provide spirit system and assisting a piece : decompression machine, safe valve, allotment box ; and standard air, hybrid air, special kind air, high install craft device purely and gaseously ; the automation cuts over, going together with to compare to equip automatically ; various air valve door and accessories, spirit bottle enclosure ; the low temperature equipments liquid pump ; vaporize a machine ; the low temperature closes valve ; the ripples takes care of to wait a series product
本廠專業設計生產製造各種
氣瓶檢驗成套設備(無縫,溶解,乙炔,液化石油
氣,天然
氣等
氣瓶) ,各種
氣體充灌臺,匯流排及充灌夾具;不銹鋼四
氟軟管,工業
氣體(充裝)集裝箱,現代化工業廠房集中供
氣系統及輔件:減壓器,安全閥,分配箱;以及標準
氣體,混合
氣體,特種
氣體,高純
氣體的配置工藝裝置;自動化切換,自動配比裝置;各種
氣體閥門及配件,
氣瓶附件;低溫設備液體泵;汽化器;低溫截止閥;波紋管等系列產品
Health standard for sulfuryl fluoride in the air of workplace
車間空
氣中硫酰
氟衛生標準
The discussion of the calibration curves concludes that the calibration curves with the ar buffer gas are more accurate than those with the others ; ( 3 ) the curve characteristics are discussed and concluded
對定標曲線的討論結果表明,在
氟氣環境中得到的定標曲線比其他三種環境中的定標曲線具有更好的精確性。
The implementation of fluorine generation technology for chemical vapor deposition ( cvd ) chamber cleaning applications poses significant new challenges with regard to safety, reliability, purity and overall cost of ownership
摘要對于將
氟氣應用在化學
氣相沉積器清洗的應用而言,其安全性、穩定性、純度和價格,在應用上是一個新的挑戰。
An integrated fluorine supply strategy has been demonstrated to be the most effective means of implementing a safe and reliable fluorine supply to users seeking a low - cost replacement for standard chamber clean chemistries
對一般
氣相沉積反應器清洗而言,一體化
氟氣供應策略,對尋求低價取代方案的使用者而言,是最安全和穩定的供應方式。
Fluorine gas at atmospheric pressure
大氣壓下的氟氣體