使有效

Extensive experimentation revealed several issues, along with several corresponding solutions:(1) given that lithium metal dissolves slowly in liquid ammonia, considerable time was required to generate the dissolved metal solution (ca. 1 h);(2) the t -BuOH must be freshly distilled prior to use 21 to diminish the formation of ketone 19 (Figure 2);(3) efficient capture of the lithium enolate ( 11 ) required the use of freshly distilled TMSCl and Et 3 N; and (4) the presence of residual thiophenol upon workup was found to inhibit the subsequent Sc 3 -promoted hydroxymethylation.

大量实验揭示若干问题，随着几个对策 1鉴于锂金属溶化慢慢液氨、需要相当多的时间创造了金属溶液溶解(约占1小时)；(2) T恤使操作必须事先用新鲜蒸馏水形成酮减少2119(图2)；有效捕获的锂烯醇(11)使用新鲜蒸馏水需氯和ET三氮；含有残余硫workup经发现抑制随后推选3-羟甲晋升。

And intelligently thought-out tools that make sense, work well, and get the job done with a minimum of fuss

而且精心智能化的工具是合理且有效的，它们使工作更加轻松便捷。

Long end theory thinks, the three-ply force that makes long end appear is respectively: Those who manufacture a tool gain ground make consumer is changed to generator, those who transmit a tool gain ground reduce consumptive cost, supply and demand join effectively.

长尾理论认为，促使长尾出现的三股力量分别为：生产工具的普及使消费者向生产者转化，传播工具的普及降低消费成本，供给与需求有效连接。【以下内容为IT者网站提供英文翻译，未经授权请勿转载

The simulation results demonstrate that the proposed mechanism can obtain higher throughput and lower packet loss rate, and achieve reliability and real-time performance on the receiving side.

仿真结果表明：该策略能使流媒体数据流获得较高的吞吐量和较低的丢包率，有效提高流媒体传输的可靠性和实时性。

The whole analysis was completed on a C〓 column in 18min at a flow rate of 0.5 ml/min, with the mobile phase of methanol-water (93: 7, v: v) containing 75 mmol/L TEOLA and 200 mmol/L HAc, or with the mobile phase of ethanol-water (90: 10, v: v) containing 25 mmol/L TEOLA and 200mmol/L HAc pumped at 0.25ml/min. Compared with the methanol system, the ethanol system was a better candidate for the separation of thulium porphyrin complexes in view of selectivity.

在C〓分析柱（5μm，2.5×150mm）上，流动相为：甲醇：水＝93：7（v/v内含75mmol/L三乙醇胺和200mmol/LHAc），流速为0.5ml/min和流动相为：乙醇：水＝90：10（v/v，内含25mmol/L三乙醇胺和200mmol/L HAc），流速为0.25ml/min，均能使六个铥卟啉配合物在18min内得到有效的分离，相比之下，乙醇体系对铥卟啉配合物更具有分离选择性。

After all. It has been proved that tiding your desk is one of the most common, and effective ways workers calm and focus themselves.

毕竟事实证明，整理书桌是使人平静心情、集中注意力的最常用、有效的方式之一。

He said he would take steps to tighten up the law.

他说他将采取措施使法律更严格有效。

It's indispensable to recognize the importance of protecting and developing Timbal culture/ We should adopt affirmative and effective steps to recur the resplendence of Timbal culture.

认识到保护和发展铜鼓文化的重要性是必要的，我们更要采取积极有效的措施来保护和传承铜鼓文化，使铜鼓文化的辉煌得以重现。

The success of effective strategy depends on the superexcellent implement. Timeworn companys chart and complicated workflow resulted in rotten communication and plenty bureaucracy.

有效战略的成功在于卓越的执行。M公司陈旧的组织结构、复杂的业务流程使企业内部沟通不畅，官僚严重，导致战略执行的失败。

The introduction of the tolyl groups as the peripheral substitutions is highly beneficial for the thermal and morphological stability.

引入甲苯基於寡聚茚芴骨架外侧可以有效造成立体阻隔，减少分子间的堆叠，使材料的热稳定性较佳。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。