It's titration end-point when the colour of the solution appeared light orange-red and didn't fad in thirty seconds.
甲醛法测定铵盐中的氮,由于在同一溶液中,实际使用了甲基红和酚酞两种指示剂,在以NaOH为标准溶液的滴定过程中,应注意溶液中的两种指示剂颜色的变化过程,当溶液呈现微橙红色并保持30s不褪色才为滴定终点。
A moderate, light, or strong yellowish pink to a moderate reddish orange or light orange.
橙红色中等、强或轻微或深黄色粉红至中等红橙或淡橙色
a deep orange-red variety of chalcedony.
一种深橙红色的玉髓。
Of a deep or strong pink to moderate red or reddish orange.
珊瑚红的从暗粉红色到红色或橙红色的
A deep or strong pink to moderate red or reddish orange.
珊瑚红一种暗粉红色到红色或橙红色之间的颜色
Eurasian tree with orange-red berrylike fruits.
欧亚树种,有橙红色的浆果似的果实。
Red, orange, yellow, green,
红色,橙色,黄色,绿色,
warm reds and yellows and orange.
暖暖的红色、橙色和黄色。
Red grades into orange.
红色逐渐变成橙色。
Red, orange, green and purple are all colours.
红、 橙、 绿、 紫都是颜色.
Lady beetles are red, orange or black.
瓢虫的体色分为红色,橙色或黑色几种。
The warm colours are red, orange and yellow.
暖色是指红色、橙色和黄色,
to mix red and yellow to make orange
把红色与黄色混合调成橙色
If you mix red and yellow, you get orange.
把红色和黄色混在一起就是橙色.
Is it yellow, red, or orange?
这个东西是黄色、红色,还是橙色的?
of a vivid red to reddish-orange color.
指介于鲜红到橙红之间的颜色。
A brownish orange.
橙红一种略带棕色的黄色
a translucent red or orange variety of chalcedony.
一种半透明的红色或橙色玉髓。
The orange curtains jar with the red furniture.
这橙色窗帘与红色的家具不协调。
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