共搜索到367条信息，每页显示10条信息，共37页。用时：0小时0分1秒16毫秒
. This condition can be attributed to the solidified melt that was disturbed to a certain extent during the pouring process. Furthermore, the pouring time was about 4 s, which had a short-term heat preservation... for a certain time. A short contact time will lead to the insufficient heat transfer of the melt in the DCR and a small supercooling, further resulting in only a small amount of α1-Al formation......
; Engineering A, 2014, 595: 224-234. [16] FEYERABEND F, FISCHER J, HOLTZ J, et al. Evaluation of short-term effects of rare earth and other elements used in magnesium alloys on primary cells and cell lines[J......
conversion coating exhibits a rapid growth rate and improves the corrosion resistance of substrate, it can only be used for short-term corrosion protection of Mg-Li alloys due to complex pretreatment.... Hence, it can only be used for short-term protective treatment, or coated on other conversion coating to form composite coating. Organic-inorganic hybrid coating is a homogeneous multiphase coating......
samples as hard soils. Thus, the tested debris-flow deposits may be roughly classified as hard soil-soft rocks. As used here, the term, hard soil-soft rock, however, is only a physico-mechanical concept......
is to obtain the mass and velocity of each rock fragment and calculate its kinetic energy precisely. However, there are numerous rock fragments being ejected in diverse directions in a very short......
, viscoplastic ice inclusion, liquid water and gaseous inclusions (water vapor and air). During the long-term evolution of frozen soil, the underground ice layers with the thickness of several meters or even... in practice. For example, the insulation board cannot change the heat absorption trend caused by embankment construction [13], which is not conducive to the long-term stability of the embankment......
to maintain a suitable working environment. They proposed a proper early warning model to improve the mine ventilation safety. For the proposed model, the rough set (RS) theory and support vector......
of new phase in the case of an activated sample is higher than that of Ea for the same process in the case of non-activated sample. Namely, during rather short time and high-energy milling of precursor powder (after chemical treatment and prior to thermal heating), the effect of a mechanical force on the surfaces of randomly distributed crushed powder may lead to a short-term "tacking" of the outer......
and exposed to weathering at the earth’s surface (i.e., <150 years) limits evaluation of the trajectory of its soil formation. Short-term changes in mineralogy have, nevertheless, been noted. For example... (particularly the physical properties) occur. When dredged sediments are deposited on land, the term "ripening" is used to describe the conversion of a waterlogged sediment into soil-like material......
on the crashworthiness of energy-absorption structures mostly consider the short-term large-scale deformation caused by dynamic shock on the structure, and more often use the explicit time integration method... and the optimization design of vehicle bearing energy absorbing structure should be a focus of future research. 2) How to capture the impact force and the plastic and elastic stress wave properly in a very short......
