单词	排水钻孔
释义	排水钻孔 drainage hole
随便看	reform of teachingcontent reform of teaching content reform of teaching management reform of teaching materials reform of teaching method reform of teaching methods reform of teaching model reform of teaching system reform of textbook reform of textbooks reform of textbook system reform of the administrative system reform of the basic education reform of the business system reform of the cadre system reform of the chinese character reform of the Chinese course reform of the constitution reform of the course content reform of the credit system reform of the culture system reform of the distribution system reform of the economic structure reform of the economic system reform of the educational system