醚的

Technically, the PPS is a full-automatic only weapon, based on simple blowback principle, and is fired from the open bolt.

从技术上说，聚苯硫醚是一种全自动的唯一武器，基于简单的反作用原则，从开放的螺栓开枪。

Cannabinol and its tetrahydro derivatives; their3-alkyl homologues; any ester or ether of any

大麻酚及其四氢衍生物；它们的3-烷基同系物；任何属此项范围内的物质的酯类及醚类 PP-S1

Cannabinol and its tetrahydro derivatives; their 3-alkyl homologues; any ester or ether of any substance

falling within this item 大麻酚及其四氢衍生物；它们的3-烷基同系物；任何属此项范围内的物质的酯类及醚类 PP

From the dehydration of acetic acid in industry, novel membranes used for this purpose were prepared by modifying Cardo polyetherketone (which is solvent resistance and hydrophobic) for the first time.

基于醋酸脱水的重要的工业意义，本论文首次以耐化学溶剂性能优异的亲油性材料酚酞侧基聚醚酮为膜材料，通过对其进行改性，制备醋酸渗透蒸发脱水膜。

Also the molecular structure and functional effects of this active component were studied in detail. 1 Extraction, separation, purification and structural identification of the functional component in Chufa After initial handling of waste slurry to solid powder, ethanol was used to lixiviate it followed by the extraction with petroleum ether,ethyl acetate,n-butyl alcohol one by one, the polarity of three organic reagents being changed from low to high.

荸荠功能因子的提取、分离、纯化及结构鉴定以马蹄粉厂产粉废浆为原料，经过实验室初处理成固态原料粉后，用乙醇浸提，再将浸提物以水悬浮，依次通过极性从小到大的石油醚、乙酸乙酯、正丁醇三种有机溶剂两相萃取分部，并以金黄葡萄球菌、枯草芽孢杆菌和致病大肠杆菌为指示菌，检测上述各部分提取物的功能效果。

Solid alcohol ; Coagulator ; Gelatum temperature ; SolGel Process

国内制备固体酒精方法的主要区别是所选固化剂的不同，所用的固化剂主要有司盘40[1]、硅胶[2]、醋酸钙[3]、硝化纤维[4]、羟丙基纤维素乙基醚

Maduramicin is a new type of polyether ionophore antibiotic, which can particularly kill and restrain coccidia - a kind of animal parasite which induce coccidiosis.

马杜霉素是一种新型的聚醚类离子载体型抗生素，可以特异性的杀灭和抑制对畜牧养殖业危害极大的动物寄生虫——球虫。

The experimental data indicated that nine kinds of the above studied pyrethroids containing isoxazole were active against cabbage worm and cotton aphid.

初步的试验表明，其中9个异噁唑醚菊酯化合物具有较强的生物活性，为新型拟除虫菊酯的创制提供了参考依据。

Cottonseed oil and cottonseed meal with good quality could be obtained from cottonseed kernel by a two - phase extraction system which was composed of petroleum ether and methanol.

采用石油醚和甲醇的双液相溶剂浸取棉仁可以得到高质量的棉籽油和棉籽粕，棉仁中的棉酚大部分被甲醇溶解。

The requirement of matrix resin for the high frequency and high performance copper clad laminate was introduced and polyphenylene ether resin, cyanate resin and polyimide resin were also discussed in detail.

介绍了高频高性能覆铜板对基材的性能要求，详细讨论了聚苯醚树脂、氰酸酯树脂及聚酰亚胺树脂的特性，并简要介绍了各种树脂基覆铜板的应用情况。

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。