查询词典 lac

Lac is a natural substance that is secreted by the insect "Coccus lacca" often referred to as the lac beetle.

虫胶是由一种名为"Coccus lacca"的昆虫，也即是人们平时说的紫胶虫分泌的一种天然物质。

Content of mineral salt has certain relationship with thickness of raw lac, mortality, fecundity and amount of lac secreted by per Kerria lacca.

无机盐含量与胶被厚、死亡率、怀卵量、个体泌胶量有一定关系。

Come forward new formula to count mortality of lac insect.There are obvious linear relationship between individual weight and adult density, between adult density and amount of lac secreted by per Kerria lacca on double logarithmic coordinate axis.

有针对性地选择固虫密度、性比、死亡率、泌胶量、怀卵量、胶被厚、放收比指标，分别评价紫胶虫在不同需求下的经济指标，提出了3个评价公式。

Next, we reviewed the connection between RBLs and XBLs and the energy radiative process of BL Lacertae. Synchrotron radiation from radio to optical band and inverse Compton Scattering in γ ray wavebands are a wide accepted point. The beam model and gravitationally lensed model are two models associated with the radiative process. At present people tends to favor the previous one.

接着我们对射电选BL Lac型天体和X射线选BL Lac型天体之间的关系以及BL Lac型天体的能量辐射机制进行了评述，从射电到光学的同步辐射和γ射线波段逆康普顿散射的观点受到大家的普遍接受，射束模型和引力透镜模型是与辐射机制相关的两种模型，目前比较倾向于射束模型的解释。

A resinous secretion of the lac insect deposited on trees and used in making shel lac .

紫胶，虫胶由紫胶虫分泌的沉积于树上的树脂分泌物，用于制造虫胶清漆

The metabolites of NAA, Cr, Cho and Lac were analyzed.

主要观察的代谢物为NAA，Cr，Cho和Lac。

Lac-P LL is an efficient carrier for DNA target to parenchymal liver cells.

Lac-PLL是一种有效的对目的DNA分子具有肝细胞特异性导向能力的载体。

After selection of 7 days,some HB214 cells with F' factor from GM133 cells and lac+ mutation were observed,but these cells failed to form the colonies which can be seen by the naked-eye.

在培养了7d的选择平板上添加含链霉素的M9选择培养基，2d 后也观察到大量发生lac+突变但没有形成肉眼可见菌落的营养收集细胞。

From these analyses, we found that the spectral index is higher than,and gained that the evolution of AGNS could be from high-energy objects to the low-energy objects,such as BL Lac objects to the low-polarizble Quasar. In the paper, we also studied the possible correlations of the redshift and the spectral index and flux densities for different wavebands.

同时本论文还对活动星系核的各波段的流量密度进行了分析，得出：活动星系核的演化是由流量密度大的天体演化到流量密度小的天体；活动星系核的各波段辐射流量存在线性相关性，尤其是BL Lac的各波段辐射流量的线性相关特别突出。

The logic of the Lac operon is that the proteins required to use lactose are only made when their substrate is available.

原译：Lac 操纵子的逻辑是当可获得它们的底物时，蛋白质必须只用乳糖。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。