ft in中文什么意思

例句与用法

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1. Black bears can grow to about 1 . 5 metres 5 ft in height and weigh 100 kg 220 lbs or more
   日本黑熊在成年后的身高一般为大约1 . 5米，体重可达到100公斤甚至更多。
2. Our production plants are housed in a factory of100 , 000sq . ft . and over a sit 600 , 000sp . ft in sanshui , guangdong , china
   我们设于中国广东省三水区的厂房面积达100 , 000平方尺， ?地600 , 000平方尺，雇用约200名员工。
3. Rectangular living rooms spanning 24 ft in length have a roomy and practical layout with ceilings of more than 14 ft . it faces the garden to welcomes sunlight inside and exudes the luxury style of a mansion
   客厅长达约24尺，呈长方形设计，加上逾14尺特高楼底，令室内空间宽敞实用，而面向花园的设计亦令客厅更光猛开扬，尽现大宅风范。
4. Based on [ 4 ] , the author adds a linear restriction r = r to this sur system , and discusses the estimator and the optimalities of unknown regression coefficient ft in the sur system under the linear restriction
   本文将在文献[ 4 ]的基础上，对此sur系统增加一线性约束r = r ，讨论在此线性约束r = r下半相依回归系统中未知回归系数_ 1的估计及其优良性问题。