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是这个纱布吗？
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! I6 k1 R/ m$ Q9 h41.1.28 Wherever cheesecloth is mentioned in connection with either a temperature test or an abnormal* r3 N% b; z2 H/ o# g
test, the cloth is to be bleached cheese-cloth, running 14 – 15 yd2/lb (approximately 28 – 30 m2/kg), and
/ q. ~; I& V$ F x. }0 Q* k' Yhaving what is known to the trade as a ²count of 32 ´ 28² – that is, for any inch square, 32 threads in one
2 M/ v9 \, y1 [6 ?& t% F) Kdirection and 28 threads in the other direction (for any centimeter square 13 threads in one direction and
5 f, x& b5 E& t1 l# q5 Q! s11 threads in the other direction).* @4 [' t0 Y! ]4 W/ E
我们有40克的纱布，28×32。2 G B! D2 g% w# u, ~) H' C4 C" n
http://www.eychi.com/product/cc40.html7 U9 P4 Q9 h! a
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发表于 2011-7-25 19:39
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