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Nonetheless, Chinese authorities said Thursday that Beijing had 12 more blue-sky days this year compared with last, as well as drops in major pollution indexes that monitor concentrations of sulfur dioxide, carbon monoxide, nitrogen dioxide and particulate matter.

尽管如此，中国有关部门上周四表示，北京今年截至目前的蓝天数量较去年同期增加了12天，衡量二氧化硫、一氧化碳、二氧化氮和可吸入颗粒物的浓度的主要污染物指数也有所下降。

Boletus edulis, Gomphidius viscidus, Laccaria bicolor and Leccinum scabrum, growing in the media with different mass concentrations of DDT were studied in vitro.

结果表明：DDT没有影响外生菌根真菌的生长模式，只是改变了其生长速度和生物量积累。

OBJECTIVE: To investigate effects of various concentrations of dexamethasone on adipogenic differentiation of bone marrow mesenchymal cells.

目的：观察不同浓度地塞米松对骨髓间充质细胞成脂分化的影响。

In this paper different concentrations of iron boride powders were put into the iron - based metal catalyst to get different kinds of boron-doped diamonds with high thermal stability under high temperature and high pressure conditions.

本文在铁基触媒的基础上加入不同含量的硼铁粉，用静压法合成了含硼金刚石。

The average activity concentrations of gross-beta was 4.30×10^(-1)Bq/L.

对矿山造成的塌陷坑水体的开发利用和环境生态系统的恢复后就注意放射性水平的变化。

Blood LH concentrations of these hens gradually increased from initial value of less than 1 ng／ml on day 2 to values about 3.0 ng／ml on day 19 after onset of broodiness.

对照组在持续就巢期间的血浆LH水平低于1.0 ng／ml，而用药后终止就巢鸡的血浆LH水平从处理前的小于1.0 ng／ml逐渐上升至第19天的3.0 ng／ml左右。

There were significant correlations between Cd concentrations in brown rice and some agronomic characteristics.

Cd在水稻籽粒各部位的浓度和积累量分布都很不均匀。

Five concentrations of colchicines were used to treat aerial bulbil in garlic inflorescence for polyploid induction in vitro.

用5种不同浓度的秋水仙素处理大蒜花苞气生鳞茎进行多倍体诱导，发现在固体培养基上接种处理时毒害作用较小，四倍体的诱导率最高能达到66。

The results showed that NAA at low concentrations 0.1~0.2 mgL^(-1 was more beneficial for root induction, the rate of rooting was up to 100%. 1/4MS was more suitable to deal with the plantlet rooting and form small bulb. The optimal ratio of IBA and AC for rooting was 2.0 mgL^(-1) IBA+0.1%AC. The in vitro growth of plantlets were the strongest, and survival rate was 100% after incubating at 4℃ for 4 weeks when the diameter of bulblet was ≥9 mm.

结果显示；低浓度的NAA0.1~02mgL^(-1有利于根的诱导；生根率均达100%；大量元素1/4MS处理更适合试管苗的生根和小鳞茎形成；"IBA+AC"处理最佳组合是2.0mgL^(-1) IBA+0.1%AC；鳞茎直径≥9mm的试管苗去顶4℃低温冷藏4周；移栽后喷施1/2MS营养液；长势最好；成活率达到100%。

For Bulk Storage of Sulfuric Acid concentrations between 80%-95% please specify XLPE Tanks designed for 2.2 specific gravity.

由于 80%-95%硫酸时，请使用交联聚乙烯并在设计壁厚时把盛装液体比重视作2.2。

The quality of both red and white wine depends very much on the wine maker talent and on the quality of the grapes.

他的红酒和白酒的品质，根据酿造者的能力和葡萄的质量，各有差异。

No, I don't want to get drunk before my next match.

" "不，我不想让我的下一场比赛前喝醉了。