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Bonds have been in the news a lot in the last few weeks. Yields on the 10-year United States Treasury note jumped to their highest level in 5 years, before easing.

在过去的几周中，债券成为新闻的中心。10年期的美国国库券的收益，在价格松动前，已经暴涨到5年内的最高水平。

Heard of a tomato tree yields a small plot of land than the ordinary tomato production should be high it is really amazing!

听说一株蕃茄树的产量可比一小块地的普通蕃茄产量都要高呢，真是太神奇了！

The results show that the optimum catalysts for the Michael addition and the nitroreduction were tetrabutylammoniumfioride and titanium trichloride, and the yields of the addition product and the reduction product were 54% and 78%, respectively.

结果表明，Michael加成反应和硝基还原反应的最佳催化剂分别是氟化四丁基铵和三氯化钛，在二者催化作用下所得加成产物和还原产物的收率分别为54%和78%。

Second, using DBU as the base for enolization of propargylic esters of unsaturated acids 18e-k, we developed a tandem Ireland-Claisen rearrangement /isomerization reactions. It has been shown that the reaction sequence affords triene molecules 42a-b and 43a-b in moderated to high yields. Interestingly, with allyl hexa-3,5-dienoates 18i-j as the substrate, the rearranged products underwent further aromatization to give uniquely substituted benzyl acids 44a-b.

其次，以含有活泼质子的烯酸炔丙酯18e-k为底物，在DBU为烯醇化碱、TMSCl为硅试剂的条件下，底物18e-h发生了Ireland-Claisen重排/异构化串联反应，得到完全共轭的三烯类化合物42a-b及43a-b；而以己二烯酸炔丙基酯18i-j为底物时，重排/异构化后的产物进一步发生电环化等反应最终得到芳构化产物——取代苯甲酸类化合物44a-b。

No dehydrofluorination was observed and better yields were obtained when triethylamine was used.

在使用三乙胺时，未检测到脱氟现象并且产率优秀。

The trigonal prism yields three isomers also, but there are only two octahedral arrangements for this formulation.

三棱柱也有三个异构体，而对于这个分子式，仅有两种八面体排布。

The chemical plant of it ,which has more than 20 years history of triphenyl phosphate production and with capacity of 4,000 tons/year,is our fine chemical production base and the biggest professional TPP plant.It is also the only one of refine naphthalene producer in Hebei Province with yields of 10,000 tons/years,Our group has sufficient raw material supply for its own production.

其中，化工厂作为精细化工生产基地，生产磷酸三苯酯已有20余年历史，其规模为4000吨/年，目前在国内属于最大专业生产厂，精萘是河北省唯一生产厂家，现生产规模10000吨/年，并有充足的自备原料。

The effects of different fertilizer combinations on the yields and their nitrate contents of tumorous stem mustard were studied under field experiment.

采用田间试验研究不同肥料组合对茎瘤芥产量和硝酸盐含量的影响。

Precise flow control of steel from the tundish to the mold is critical for quality control improvement, increasing yields, and saving energy.

钢从漏斗到模型的精确的流量控制对质量控制方法的改进、提高产量、节约能源是至关重要的。

Pacific coast tree having aromatic foliage and small umbellate flowers followed by olivelike fruit; yields a hard tough wood.

太平洋海岸的树种，叶有香气，小型伞状花序，果实类似于橄榄；木质坚硬。

It's not quite as simple as that.

并没有那么容易。

It debuted in 1992 in Japan and the United Kingdom, and 1993 in the United States.

它首次亮相于1992年在日本和英国，在美国1993年。