- 丁(nail; spike)ASSOCIATIVE
A nail driven straight down looks like the character for nail or the fourth of the heavenly stems.
butadiene C4H6
butadiene C4H6
Butadiene is an important chemical raw material.
biethylene
A nail driven straight down looks like the character for nail or the fourth of the heavenly stems.
Two parallel horizontal strokes symbolize the number two.
butadiene C4H6
butadiene C4H6
Butadiene is an important chemical raw material.
biethylene
A nail driven straight down looks like the character for nail or the fourth of the heavenly stems.
Two parallel horizontal strokes symbolize the number two.
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