PRE的例句大全

Method for measuring trace gold with X-ray fluorescence after pre-enrichment is presented. The gold is enriched in a medium of 10% aqua regia in presence of Br 2 with polyurethane foam loaded with diphenylthiourea and methyl isobutyl ketone.

报道了在10%王水介质中，有Br2存在时用二苯基硫脲&甲基异丁酮泡沫塑料富集、X射线荧光测定痕量金的分析方法。

A nickel based naphtha steam pre reforming catalyst for methane enriched gas production was laboratory prepared.

在实验室研制了镍系轻油蒸汽预转化制取富甲烷气催化剂。

Coat the sealing ring inside and out with fresh engine oil and pre-position it on the crankshaft flange.

用新鲜机油涂抹密封圈内外侧，并预先放在曲轴法兰上。

During the producing of cultured cream, there are the main processes to be controlled, including pre heat, standardisation, homogenisation, heat treatment, inoculation and incubation etc.

在酸奶油的生产过程中，其主要工艺过程预热分离、标准化、均质、热处理、接种、发酵等均需严格控制；

The effect of solution, reduction temperature, reduction time and pre-reduction process on the preparation of 13X loading with cuprous ion were examined and the preparing conditions were optimized.

实验考察了负载溶液、还原时间、还原温度以及预处理等方面对吸附剂制备的影响，得到了制备载铜13X吸附剂所需要的最优化条件。

The effect of room temperature Pre-deformation on cyanide hardening proces was studied.

本文探讨了室温予变形对氰化过程的影响。

The Pre-ICDRA meeting will include discussions on regional and international cooperation, work sharing, capacity building, inspections, and active pharmaceutical ingredients.

ICDRA预会将包括关于区域和国际合作、分担工作、能力建设、检查以及有效药物成份的讨论。

The combining power of the Schick test toxin prepared with crude toxin standard was 2~ 5 times as strong as that pre-pared with purified toxin standard.

原制锡克试验毒素的结合力一般为精制的2～5倍。

A Kind of New Technology of Concrete Backfill Using for Embedded Pre-pressure Steel Pipe in Xiangshui Hydropower Station

响水电站埋藏式预压力钢管混凝土回填新技术

Comparing with conventional concrete backfill technology, the new one of concrete backfill using for embedded pre Pressure steel Pipes has some advantages such as shorter construction period, lower cost.

埋藏式预压力钢管混凝土回填新技术与常规回填相比，简化了施工措施，缩短了工期，具有良好的技术经济效益。

A pre-shaped hollow case of clear plastic is heat sealed to enclose goods onto a backing board which have been printed and coated with blister pack solution.

把物品放在一个定形透明胶壳内，用热力把它封贴在一片印好和涂上压索油的纸板上。

Discussing the problems in operation of large pre-baked anode cell in China

我国大型槽管理中的几个问题

A pre-paid phone card.

一种先付话费的手机卡。

Numerical simulations were carried out to investigate the in-furnace combustion parameters at 1000/ 0 BMCR ( boiler maximum continuous rating) load of pre-and post-retrofit cases.

用数值模拟的方法对改造前和改造方案在10000/BMCR负荷下的炉内燃烧参数进行研究。

The debt/ asset ratio ( DAR) is used as the scale index of financing structure. Meanwhile the study sets operations ratio ( pre-receivables) and financing ratio ( issuance of bonds and bank loans) to indicate the debt channels.

在解释变量上，采用资产负债率（DAR）来衡量企业的融资结构，并设置经营活动比率（企业的预收款）和筹资活动比率（发行债券和银行借款）来表示融资渠道。

The Cognition of the Biological Value in Pre-Qin Times

先秦时代对生物价值的认识

Fluorometric Detection of Biogenic Thiols in Lake Sediment Porewaters by High Performance Liquid Chromatography with Pre-column Derivatization

高效液相色谱荧光检测湖泊沉积物间隙水中的微量硫醇

The selectivity of the method may be increased by addition of thiocarbamide as masking reagent and pre-separation of the interferential elements using NH_3-NH_4Cl. This method is simple, rapid and accurate.

加入硫脲作掩蔽剂和用NH3-NH4CI预分离干扰元素可提高方法的选择性。

The Pre-reinforcement of Subway Passing Through the Bell Tower of Xi'an and the Construction Measures of Shield Machine

地铁线路穿越钟楼的预加固及盾构施工措施

Practices of prolonging the service life of 135 kA pre-baked anode reduction cell

135kA预焙阳极电解槽延长槽寿命的生产实践