碳酸盐

The homogeneous catalysts for selective O-methylation of phenols with DMC are generally organic bases, such as tertiary amines or phosphines, tetrabutylammonium halide and Schiff bases.

酚与DMC甲基化反应的均相催化剂一般选择叔胺、叔膦、季铵盐及Schiff碱等有机碱，多相催化剂为碱金属碳酸盐、沸石、氧化铝及附载有金属盐的氧化铝和煅烧的Mg-Al水滑石。

Periphyton community structure is studied in this paper by means of taking glass-medium as artificial substance to attract periphyton that is fixed in the Maocun epikarst spring water and in sand-shale fissure spring water.

用载玻片作人工基质，放置在桂林毛村岩溶生态试验场碳酸盐岩分布区表层岩溶泉水和砂页岩区裂隙泉水中，开展着生微型生物群落结构研究。

The oxidizers are hydrogen peroxide, molecular oxygen, hypochlorite, organic peroxide, carbonate and so on.

所用的氧化剂有过氧化氢、分子氧、次氯酸盐、有机过氧化物、碳酸盐等。

The characterization of rare earth compound powders,such as rare earth hydroxides,rare earth carbonates,rare earth oxalates and rare earth oxides,are important to the synthesis of rare earth new materials.

稀土粉体(氢氧化稀土、稀土碳酸盐、稀土草酸盐、稀土氧化物和氟化物等)的颗粒性能方面的指标对稀土新材料的开发具有重要意义。

Orbiters have spotted clay on Mars but few carbonates or other salts.

虽然人造卫星已经&看到&到火星表面的粘土，但是几乎没有碳酸盐或者其他盐类。

The selenium contents in soils from Paleozoic Basalt and Red Earth Area of Carbonzte have the highest value. The selenium contents in soils from multi-Yellow-Red Earth, Purple Earth Clastic Yellow-Red earth and metamorphite red soil are lower than average value in China.

在各土壤类别中，玄武岩红壤和碳酸盐岩红壤，硒平均含量最高，而多源黄红壤、紫色土、碎屑岩黄红壤和变质岩赤红壤硒的平均含量均低于全国硒的背景值。

The gold ore deposits and prospects occur within the nearly NW-striking faults in the carbonate rocks of the cover of the Yangtze block,Proterozoic metamorphosed quartz diorite of basement of Yangtze block and Mesozoic quartz porphyry in western Shimian, Sichuan Province.

四川石棉西部地区金矿床和矿点分布在扬子地块盖层碳酸盐岩和基底元古宙变质闪长岩以及中生代石英斑岩中的北北西和北北东走向断裂中。

Carbonate rocks are susceptible to later recrystallization during deep burial, and can isotopically re-equilibrate with higher-temperature fluids depending upon the water/rock ratios and the isotopic composition of the fluids.

碳酸盐岩在深埋过程中很容易被后期的重结晶作用影响，并且在高温流体的加入时发生同位素的分馏，这种分馏与水/岩比率以及流体同位素的组成相关。

The efficiency of re-extraction using reused EDTA reached the original level of chelating extraction only for sludge B.

Fe置换螯合铜后之DTPA悬浮液可再利用於萃取A、B或C污泥中之重金属，而Fe置换螯合铜后之EDTA悬浮液则仅可再利用於萃取B污泥中之重金属，这是B污泥中重金属结合型态多为易萃出之可交换态与碳酸盐态所致。

Powertrain+ World's first Super Handling All-Wheel-Drive System SH-AWD(TM+ 3.5 liter VTEC V-6 engine+ 300 horsepower and 260 lb-ft of torque+ 5-speed automatic transmission with Sequential SportShift, steering wheel-mounted paddle-shifters and Grade Logic Control+ CARB-certified LEV2-ULEV emissions system

动力总成+世界首创的超级全轮驱动系统+三点五升VTEC V - 6发动机+ 300马力和260磅英尺的扭矩+ 5速自动变速器顺序SportShift，方向盘安装桨转换器和逻辑控制级+碳酸盐认证LEV2 -超低排放车辆排放系统

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。