... opaque attritus不透明碎屑;不透明杂质煤 opaque projector反射式放映机,投影电视机 opaque background不透明背景 ...
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The optimum extraction method of the thiamine in the yeast was obtained as follows: In the opaque background hydrochloric acid was 0.1mol/L and the extraction condition was at the temperature of 121 ℃ for 30min.
经实验得出维生素B_1提取方法为：在避光条件下，盐酸浓度0.1mol／L、提取温度121℃、破壁时间30min。
参考来源 - 酵母菌体中B族维生素（B·2,447,543篇论文数据，部分数据来源于NoteExpress
Opaque Background (o) : Existing image is obscured by all parts of the selection.
不透明背景(O)：现有图像被选定内容的所有部分遮掩。
You can switch from a transparent background (the default) to an opaque background, and back again.
您可以从透明背景（默认情况）切换到不透明背景，然后再切换回去。
When you use a selection tool, the Transparent Background and Opaque Background options appear in the option selector on the Image Editor toolbar (as seen below).
当使用选择工具时，“透明背景”和“不透明背景”选项出现在“图像编辑器”工具栏上的“选项”选择器中(如下所示)。
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