乙烯

It is speculated that the gene EtIe1 may be involved in the regulation of Eth-induced senescence of latecifers in Hevea brasiliensis.

乙烯利刺激在促进橡胶树增产的同时，还加速了橡胶树和乳管衰老，我们推测该基因可能参与乙烯利刺激促进橡胶树乳管衰老的过程。

Technology of Licensor Ⅰ has disadvantages of high investment, high energy consumption and great ethylene loss.

我国近年还将建设多套大型乙烯装置，而不同专利商的乙烯技术是有优劣之分的。

Technology of Licensor Ⅰ has disadvantages of high investment,high energy consumption and great ethylene loss.

摘要我国近年还将建设多套大型乙烯装置，而不同专利商的乙烯技术是有优劣之分的。

Polytetra-fluoro-ethylene thin membrane,pass through cut tie by poly-4 fluorous second fluidized resinde,after sinter cut but succeed,direct membrane transfusives membrane transfusive membrane mangler direct but succeed again,It has undeniable electrical equipment insulate behaviopural,non-ageing and extensive use temperature lint.

聚四氟乙烯薄膜，车削带由聚四氟乙烯悬浮树脂经模压，烧结后车削而成。定向膜将车削膜再经压延机定向而成，它具有优良的电器绝缘性能，不老化及广阔的使用温度范围。

ACC level and ACC oxidase activity in mesocarp were consistent with the onset of ethylene production in fruit.

在乙烯跃变上升时果肉中ACC氧化酶的活性下降，ACC含量和ACC合成酶活力的变化与乙烯生成量变化的趋势一致。

According to the compared analysis of prevention sulfur deposition during the production of high sour gas well, the key of prevent sulfur deposition and to control sulfur blocking is choose right element sulfur, carry out some research on the selection of sulfur solution, remix the triethylenetetramine, diethylenetriamine and monoethanolamine in different ratios, finally formed LJ-1 compounding which is best fit the production of north Sichuan province.

对比分析了多种硫沉积防治方法，防治的关键在于溶硫剂的合理选择，通过溶硫剂优选室内评价实验研究筛选出三乙烯四胺、二乙烯三胺和乙醇胺等三种单剂，按照不同的比例与现场使用的防冻剂乙二醇进行复配，最终形成了适合川东地区高含硫气井的溶硫剂LJ-1合理配方，性能评价实验表明溶硫剂LJ-1溶硫速率快、溶解度高、腐蚀小。

Nowadays cracking of naphtha plays a very important role in producing ethylene.

石脑油裂解制乙烯在目前的乙烯工业中有着非常重要的地位。

In chapter 4 an abnormal reaction that the nitro group of 1-aryl-2-nitroethenescan be easily replaced by the organic moity of FG-RZnI using Ni〓 and tertiaryamine as catalyst was first given. The experimental results show that in the presenceof catalytic amount of Ni〓 and tertiary amines, the reaction of FG-RZnI andl-aryl-2-nitroethenes give the substitution products l-aryl-l-alkene, instead ofMichael addition products.

通过实验发现，在催化量的Ni〓及叔胺催化下， l-硝基-2-芳基乙烯与烷基碘化锌并不进行Michael加成反应，而是发生1-硝基-2-芳基乙烯中硝基被取代的反应，生成了高产率的1-芳基-l-烯烃，由于此反应的原料易得、反应条件温和、产物的产率高，因而是合成l-芳基-1-烯烃的有效方法。

Ethylene 1 octene copolymer ; ethylene acrylic acid copolymer ; polyamide 6; alloy

乙烯1辛烯聚合物；乙烯丙烯酸共聚物；聚酰胺6；合金

PE-RT is referred to as the Polyethylene Raised Temperature, it is by the ethylene monomer and 1 - octene copolymer from monomers is specifically designed for the heating system of medium-density ethylene - octene copolymer, which has a narrow molecular weight distribution , octene uniformly distributed in the polymer main chain on the special molecular structure, it retained the original PE performance and processing properties of the health advantages, but also strengthen the durability of a new type of high-temperature resin pipe.

PE-RT是Polyethylene Raised Temperature的简称，它是由乙烯单体和1-辛烯单体共聚而成的，是专门为采暖系统而设计的中密度乙烯－辛烯共聚物，其具有分子量分布狭窄，辛烯均匀分布在聚合物主链上的特殊分子结构，它既保留PE原有的卫生性能及加工性能等优点，又强化了高温耐久性的一种新型管材专用料。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。