前驱

Dicarboxylic acids, which originate from burning of petroleum fuel as well as from man-made and natural photochemical precursors, are one of the important atmospheric aerosols.

二元酸是大气环境中气胶的重要组成之一，自石化燃燃烧及人为与生物源的有机前驱物的光化反应导致。

For this pyrolysis, cadmium acetate dihydrate and sulfur powder were used as the cadmium source and sulfur source, respectively.

以三辛基膦为单一配位溶剂，二水合乙酸福和硫粉为前驱体，用高温热解的方法制备CdS纳米棒。

The copolycondensation type polyamic acid was synthesized by using 3,3', 4,4'-Benzophenonetetracarboxylic dianhydride as the dianhydride monomer, 4,4'-Diamino diphenylmethane and 4,4'-Oxydianiline as the diamine monomer under microwave irradiation in Dimethylformamide.

在微波辐射条件下，采用3，3'，4，4'-二苯酮四羧酸二酐、4，4'-二氨基二苯甲烷和4，4'-二氨基二苯醚为单体，N，N'-二甲基甲酰胺为溶剂，低温合成一种共缩聚聚酰亚胺的前驱体聚酰胺酸，化学亚胺化脱水环化生成BTDA型共缩聚聚酰亚胺。

Price is yet to be confirmed, but if the Chinese-made Great Wall Motors X240 is $23,990 driveaway with all its heavy-duty 4WD hardware, then surely the front-drive-only Chery J11 must come in under that price.

价格目前还有待证实，但如果中国制造的长城四驱车X240价格可以定到23990美元的话，肯定仅有前驱的J11将会定价更低。

The nanoTiO2-CNT-PtNi complex catalysts were prepared by the direct hydrolysis of electrosynthetic precursor Ti4 and electrochemical scan electrodepositing method.

采用电合成前驱体Ti4直接水解法和电化学扫描电沉积法制备纳米TiO2-CNT-PtNi复合纳米催化剂。

The synthesized products are mainly composed of equiaxial β-SiC particles with the size of around 100 nm and nanorods with the diameter of ~500 nm and the length of ~20 μm.

在1700℃下反应1h，反应前驱体全部转化为β-SiC，产物为SiC颗粒和纳米棒的混合物。

One of its roles is to change the BFU-E(burst-forming unit-erythroid) cells, which are the earliest erythrocyte precursors in the erythrocytic series, into the CFU-E (colony-forming unit-erythroid).

其中一个重要作用是使BFU-E（爆式红细胞集落形成单元）细胞（在红细胞系中是一种早期前驱红细胞）向CFU-E细胞转变。

Titanium ethoxide was directly prepared using titanium as sacrificial anode in absolute ethanol.

采用海绵钛为&牺牲&阳极，在无隔膜电解槽中，电化学一步法制备了纳米TiO2 前驱体钛酸乙酯Ti 4 。

9H2O, and niobium ethoxide Nb(OC2H5)5 as starting materials, ethylene glycol monomethyl ether (C3H8O2) as the solvent. 0.1BiFeO3-0.9SrBi2Nb2O9 thin films were prepared on fused quartz substrates using sol-gel processing.

9H2O和乙醇铌[Nb(OC2H5)5]作为起始原料，乙二醇甲醚[C3H8O2]作为溶剂配制掺Fe的SrBi2Nb2O9前驱体溶液，利用溶胶－凝胶法在石英衬底上制备出0.1BiFeO3-0.9SrBi2Nb2O9铁电薄膜。

Again there was a high proportion lacking in shoulder and upper arm, also numerous with incorrect pedal and kicking rear actions when gaiting.

很大一部分的参展狗缺乏前驱和上前肢之间的角度，另有很多有着不正确的后驱步态。

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。