common difference (math); tolerance (engineering)
Tone colorsmāmámǎmàma
Meanings
2 senses · 6 examplesnoun
common difference (in an arithmetic sequence)
formalA key term in arithmetic sequences (like 2, 5, 8, 11...). The constant difference (e.g., 3) is the gōngchā.
Zhè这
gè个
děng等
chā差
shù数
liè列
de的
gōng公
chā差
shì是
5
5
。
The common difference of this arithmetic sequence is 5.
Qiú求
shù数
liè列
10
131
160
,
19
de1
gōng3
,
chā
1
6
,
1
9
.
.
.
的
公
差
。
Find the common difference of the sequence 10, 13, 16, 19...
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Gōng公
chā差
gōng公
shì式
shì是
d
=d
a
èr=
-
aa
yī₂
-
a
₁
。
The formula for common difference is d = a₂ - a₁.
noun
tolerance (permissible variation in a manufactured part's dimension)
technicalA fundamental concept in mechanical engineering and manufacturing. A smaller tolerance means higher precision.
Zhè这
gè个
líng零
jiàn件
de的
chǐ尺
cùn寸
gōng公
chā差
shì是
zhèng正
fù负
0
010
.
háo0
mǐ1
毫
米
。
The dimensional tolerance for this part is plus or minus 0.01 millimeters.
Gōng工
chéng程
shī师
zhèng正
zài在
shè设
dìng定
chǐ齿
lún轮
de的
gōng公
chā差
fàn范
wéi围
。
The engineer is setting the tolerance range for the gear.
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Jīng精
mì密
yí仪
qì器
duì对
gōng公
chā差
de的
yāo要
qiú求
fēi非
cháng常
yán严
gé格
。
Precision instruments have very strict tolerance requirements.