查询词典 sand blast apparatus

They went to work at once, plowing, barrowing,rolling, furrowing, in admirable order, as if they were bent on making this a model farm; but when I was looking sharp to see what kind of seed they dropped into the furrow, a gang of fellows by my side suddenly began to hook up the virgin mould itself, with a peculiar jerk, clean down to the sand, or rather the water —— for it was a very springy soil —— indeed all the terra firma there was ——and haul it away on sleds, and then I guessed that they must be cutting peat in a bog.

他们立刻工作了，耕着，耙着，滚着，犁着，秩序井然，好像他们要把这里变成一个模范的农场：可是正在我睁大了眼睛看他们要播下什么种子的时候，我旁边的一群人突然开始钩起那处女地来了，猛的一动，就一直钩到沙地上，或者钩到水里，因为这是一片很松软的土地，——那儿的一切的大地都是这样，——立刻用一辆雪车把它载走了，那时候我猜想，他们一定是在泥沼里挖泥炭吧。

In this paper we choose74sediment samples which are from different types of sediment (Loess-paleosol sequence sediment samples, lake sediment samples, Aeolian sand samples, peat and bog samples, Archaeological samples and surface samples). Through our investigations in the laboratory, we have some conclusion about the extraction methods of Quaternary pollen and spores from different type of sediments.

本文选取了中国北方不同沉积相的沉积物样品（黄土与古土壤样品17个、湖泊样品沉积物20个、风成砂样品11个、泥炭沼泽样品10、考古点文化层6个、表土样品10个）共74个，通过对同一种样品不同处理方法的对比研究，就中国北方不同沉积物的孢粉提取方法进行了探讨。

Cutting the medium third of the available two-thirds of the sand mixture of peat moss.

扦插的介质可用2/3的粗砂混合1/3的泥炭苔。

The growing medium should be equal parts of sand and loam with an admixture of peat moss and cow manure.

种植介质应当由等量的沙土和粘土与泥炭沼和牛粪肥的混合物构成。

Also, a combination of peat moss, sand, and commercial potting soil (be certain that there are no pesticide or chemical additives) is an excellent and versatile substrate.

同时，结合泥炭藓，砂，及商业盆栽土（肯定不存在任何农药或化学添加剂），这样一个混合土壤是最好的垫材。

The best way is to sow it on the surface of a mixture of equal parts peat and sand.

播种种子最好的方法就是将种子撒在等比例的泥炭土和砂子的混合介质表面上。

A mixture of sand and peat can also be used to aid growth and drainage.

阿砂和泥炭混合物也可以用来帮助发展和排水。

Soil moisture sensors based on principles of Time Domain Reflectometry,Frequency Domain and a new type of soil moisture sensor based on Standing Wave Ratio developed by China Agricultural University were evaluated with typical sandy loam,loess,peaty sand and leady loam from northern Germany.

该文针对时域反射法、频率分解法型土壤水分传感器和中国农业大学研制的基于驻波率原理的新型土壤水分传感器，在德国北部典型的沙壤土、黄土、含煤沙土及含铅壤土土样上做了试验。

This pedestal rock began as a mass of pebbly sandstone. Its sculptors were cycles of hot and cold, wet and dry, as well as blowing sand, which caused the sloughing off of shards scattered at the base.

蘑菇石的底座开始时是一堆卵砂石，后来经过冷热，干湿，以及风沙的侵蚀，下面的石头渐渐的就土崩瓦解了。

The abrasive wear of metal of four flux-cored wire for repairing of pedrail engineering machine was studied experimentally on a ML-225 wet sand abrasive tester. The surface of abrasive wear specimen and its microstructure were investigated by scanning electron microscope after completion of wear test.

利用ML-225型湿砂橡胶轮式磨损试验机、扫描电镜对所开发的四种用于履带式工程机械行走机构堆焊修复用药芯焊丝的熔敷金属磨粒磨损性能进行了试验研究。

Methods Clinical data of 3 cases of bile duct injury during laparoscopic cholecystectomy were analyzed retrospectively.

回顾总结3例LC术中胆管损伤的临床资料，分析3例胆管损伤的原因及对策。

These techniques are applied to the gobang.

本文将这些技术用于五子棋中。