落

A systematic study is made on the underground continuous mining of No.3 thick and low grade orebody of a nonferrous metal mine by a simulation test with similar material and by FLAC-3D method,including the study on the natural roof caving,the time-sequence system of artificially induced roof caving and the roof stress cha...

利用相似材料模拟试验和FLAC-3D研究方法，对某有色金属矿山厚大、低品位的3#矿体的地下连续开采进行了系统研究，包括矿体顶板自然崩落性、顶板人工诱导崩落时序系统以及开采过程中顶板应力变化规律的研究。

Mouse blastula showed clear band in 24-72 hours, came out from cell membrane in 1 day. After 3-5 days, it become embryonic stem cell mass. At 7 days, the cell mass showed "bird nest" shape.

小鼠囊胚孵出透明带的时间为24~72 h，从胞膜中孵出约为1 d，3~5 d后可形成胚胎干细胞集落，7 d后集落呈&鸟巢&状。

This should be a moonset at dawn, followed by saying that "the middle of the night," middle of the night and on the ups and downs, time-dependent is clearly wrong; Crow is a daytime animal, and chickens like to sleep at night, at midnight to hear a crow call, just as unnatural as Banyejijiao ; Moreover, the monastery has little to midnight bell,"Chimes at Midnight" also makes surprise to us.

月落本应该是黎明时分，后面又说&夜半&，夜半与月落的时间相关显然不对；乌鸦是白昼动物，和鸡一样晚上睡觉，半夜听到乌鸦叫，就像半夜鸡叫一样不自然；再者寺院也鲜有半夜敲钟的，&夜半钟声&也让人感到诧异。

The low winter sun beamed directly upon the great double-doored entrance on this side; one of the doors being open, so that the rays stretched far in over the threshing-floor to the preacher and his audience, all snugly sheltered from the northern breeze.

低沉的冬日直射着这边有着双层大门的入口处；一扇大门已经打开，外面的阳光照进里面的打麦场，落在讲道人的身上，也落在听讲道的人身上，他们都暖暖和和地站在麦仓里，麦仓挡住了北边的寒风。

According to the drag scraper and scooptram ore removal way in spontaneous caving of Tongkuangyu Mine, the advantages, disadvantages and suitable conditions of drag scraper and scooptram are elaborated.

根据铜矿峪矿自然崩落法电耙出矿与铲运机出矿应用实践，阐明电耙与铲运机出矿的优缺点及适用条件，论述自然崩落法出矿方式的选择依据，并指出出矿过程中应注意的问题。

This paper mainly deals with the key technologies involved in a guide tracked drop hammer breaker, including the working mechanism of the drop hammer , the design conception and working principle of the hydraulic control system, Indoor tests conducted on the prototype show that main parameters have met the design requirements.

本文重点论述了导轨式落锤碎石机的关键技术─-落锤工作机构及其液控系统的设计思路、工作原理。

In order to provide theoretical reference for wheat breeding of high yield and good grain filling characteristics, a study was carried out on genotypic variation of grain filling and the contribution of ear, stem and leaf on grain filling were determined with three wheat varieties differing in senesced yellowing pattern.

为给不同落黄类型小麦品种的选育提供理论依据，研究了不同落黄类型小麦品种籽粒灌浆和穗、茎、叶对籽粒灌浆的贡献。

Transaction costs would result in the existence of the inner band for arbitrages in the Taiwanese broiler product market within which excessively profitable trading opportunities are impossible.

交易成本的存在会导致台湾肉鸡市场的价差落在区间外时有套利的机会；但若价差落在区间内时，获取套利的超额利润是不可能的。

Rain slashed sideways, coming at them like arrows fired from a million bowstrings.

雨水斜斜的落下，像从无数支弓箭中发射的箭矢一般落在他们身上。

Transgenic CD34+ cells in the experimental group still could generate brust forming unit-erythroid, colony-forming units granulocute/monocyte and multipotential hematopoietic progenitors; especially, CFU-GM was the main cell in hemopoietic progenitor cell.

实验组转基因CD34+细胞于12周后仍可产生造血祖细胞集落红系祖细胞、粒单系祖细胞、脐血多向造血祖细胞，所形成的造血祖细胞集落以粒单系祖细胞为主。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。