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- BTA系统 BTA system
- 硬脆材料精密小深孔BTA型珩磨工具的加工特性研究 Research of BTA grinding tool s'speciality on machining small deep precise hole of hard brittle material
- BTA和HMMP对X70钢在含H_2S弱酸性溶液中的缓蚀作用 INHIBITION OF BTA AND HMMP TO X70 STEEL IN H_2S WEAK ACIDIC SOLUTION
- 生物杀虫剂BtA对结球甘蓝地害虫及其捕食性天敌生态位变动的影响 Comparison of spatial niche breadth and overlap between predators and their preys, as pests in a cabbage field under the treatments of GCSC-BtA biocide and methomyl insecticide
- 在酸性、中性、碱性介质中AMT对铜都有良好的缓蚀性能,在酸性介质中其缓蚀性能要优于BTA、TTA。 In acidic medium, the inhibition of AMT to copper is superior to BTA and TTA.
- 在缓蚀剂总浓度为 3mg/L ,Na2 WO4 和BTA复配时 ,显出较好的协同效应 ,其最佳配比为 :1mg/LNa2 WO4 +2mg/LBTA BTA and tungstate shows good synergistic effect and the optimum ratio is 1mg/L Na 2WO 4+2mg/L BTA
- 采用正交试验,得到最佳化学抛光液配方为:每100mL抛光液中含8g FeCl3,8mL盐酸,0.1 mLAEO-9,0.2g BTA,1.2mL乙醇。 Based on orthogonal experiment, an optimal formulation of polishing bath was obtained. The bath (100 mL) contains 8 g FeCl3, 8 mL HCl, 0.1 mL AEO-9, 0.2 g BTA and 1.2 mL ethanol.
- 本实验以巯基乙酸(TGA)、4-丁巯内酯(BTA)和联硫二丙酰二肼(DTPH)为反应试剂,通过相应催化剂的活化作用,采用均相反应法制备了巯基化壳聚糖和巯基化明胶。 In this work, Thiolated chitosan and gelatin were synthesized by using thioglycolic acid (TGA), 4-butyrothiolactone (BTA) or 3,3'-dithiobis(propionic hydrazide) (DTPH). Mediated by carbodiimide (EDAC) or imidazole, mercapto group were covalently linked to chitosan and gelatin.
- 本工作对比了各种防铜变色剂的防变色效果,结果表明,1-苯基-5-巯基四氮唑(PMTA)的防变色效果优于化学钝化、电解钝化、苯骈三氮唑(BTA)、羟基苯骈三氮唑(HBT)、2-巯基苯骈噻唑(MBT)。 The antitarnish effects of various antitarnish agents of copper have been compared in this paper. The results showed that the l-pheny1-5-mercaptotetrazole (PMTA) is a more excellent antitarnish agent than the Benzotriazole (BTA), Hydroxybenzoiri azole(HBT), 2-mercapto-benzothiazole (MBT).
