1) jacking
[英][dʒæk] [美][dʒæk]
顶进
1.
Analysis on jacking construction of frame culvert of Renmin Road in Changsha;
长沙市人民路框架涵顶进施工要点分析
2.
The application of relaying method in jacking construction of box culvert;
中继间法顶进箱涵施工技术
3.
Construction of small diameter water tunnel in soft soil by steel sheath jacking method;
钢护套顶进施工小断面软土引水隧洞技术
2) jacking method
顶进
1.
Box culvert by jacking method underpassing Jing-Gang-Ao expressway is a controlling engineering of Zhengzhou-Kaifeng expressway.
下穿京港澳高速公路顶推箱涵是郑开大道的关键控制性工程,顶进过程中箱涵的裂缝控制是该顶推工程成功与否的重要因素。
2.
Problems such as head rising, head firming or deviated direction often occur during bridge and culvert construction with jacking method.
桥涵顶进施工中常出现抬头、扎头或方向偏差等问题,对此除应加强观测、认真预防外,还必须及时纠偏。
3.
Alternate level jacking method is applied to construction of Hu Minlu railway culvert in soft soil for the first time.
首次在软土中采用地道桥不等高顶进技术施工,减少工程挖土和箱身工程量,加快施工进度;预留土堤增强被动土压力,减少基坑围护位移,将超宽超深的地道桥施工的安全风险降到最低。
3) curved jacking
曲线顶进
4) headspace injection
顶空进样
1.
A capillary column headspace injection method for the determination of residual methanol, tetrahydrofuran, dichloroethane, pyridine and toluene in reloxifene hydrochloride was established.
采用毛细管柱顶空进样法 ,以二烷为内标 ,同时测量盐酸雷洛昔芬中甲醇、四氢呋喃、二氯乙烷、吡啶及甲苯等 5种溶剂的残留量。
2.
A GC headspace injection method for the determination of residual organic solvents such as methanol, ethanol, acetonitrile, dichloromethane, ethylacetate, 4 methyl 2 pentanone, toluene, DMF, chloroform and tetrahydrofuran in tazobactam was established.
建立了气相色谱顶空进样法测定三唑巴坦中甲醇、乙醇、乙腈、二氯甲烷、乙酸乙酯、甲基异丁基酮、甲苯、N ,N′-二甲基甲酰胺、氯仿和四氢呋喃等有机溶剂的残留量。
3.
Methods The volatile compounds obtained by steam distillation or direct headspace injection were analyzed by GC-MS.
方法采用传统的水蒸气蒸馏提取挥发油,和顶空进样直接采集挥发性成分2种方法,对吉林细辛中的挥发性成分进行GC-MS分析。
5) Headspace
[英]['hedspeis] [美]['hɛd,spes]
顶空进样
1.
A method for the determination of volatile constituents in adhesive by headspace GC/MS was proposed.
报道利用顶空进样 -GC/MS技术鉴定物质中挥发性成份的方法 ,鉴定出XY挥发性成份。
2.
Determination of residual solvent in medicine by wide-bore capillary Headspace-Gas Chromatography(HS-GC)is a rapid,simple and high-efficient method,it is widely applicated to determinate residual solvent in medicine.
本文通过建立原料药肝素钠、烟酸占替诺、福辛普利钠和盐酸头孢唑兰中残留溶剂分析测定方法,阐述了顶空进样一大口径毛细管气相色谱法检测药物中残留溶剂的应用,通过研究建立方法,探讨了顶空进样大口径毛细管气相色谱法应用开发和实际应用问题。
3.
METHODS The headspace GC system consisted of a capillary column,polymerization or cross linking polyethylene glycol as the solid phase,and FID as the detector.
方法以聚乙二醇为固定相的毛细管色谱柱,氢火焰离子检测器,顶空进样方式,柱温:起始温度为60℃,程序升温起始温度为60℃,保持16 min,以每分钟20℃的升温速率升至200℃,保持2 min。
6) Headspace Sampling
顶空进样
1.
Determination of the residual organic volatile solvents in block cream by gas chromatography with headspace sampling;
气相色谱顶空进样法测定防晒霜中有机溶剂残留量
2.
Determination of three residual organic volatile solvents in cefepime by gas chromatography with headspace sampling;
气相色谱顶空进样法测定头孢吡肟中3种有机物残留量
3.
In concentrated sulfuric acid TFA may change into MTFA with dimethyl sulfate(DMS),so it is possible to obtain the mass concentration of TFA in water samples by determining the mass concentration of MTFA with headspace sampling and GC-MS,using the volatility of MTFA.
笔者建立了测定TFA质量浓度的实验方法:将样品中的三氟乙酸与硫酸二甲酯在浓硫酸介质中衍生为三氟乙酸甲酯(MTFA),利用MTFA的易挥发性,以顶空进样和气相色谱-质谱联用的方法检测样品中MTFA的质量浓度,进而得到环境水样中TFA的质量浓度。
补充资料：以产顶进
指经国家有关经贸部门审批，对目前国内尚无法加工生产，需在境外购买的商品，可准许在境内的三资企业购买以替代进口，这种贸易方式称为以产顶进。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条