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241. Shrinkage cavity and shrinkage porosity were eliminated by adding iron chill on the valve body which make progressive solidification, together with atmospheric feeder which feed the casting.

242. Shrinkage reducing agent can reduce dry shrinkage of cement-stabilized macadam greatly.

243. The shrinkage cavity defects in tail of extruded aluminium alloy bar are studied by ultrasonic wave detection.

244. And this paper deals with heat of hydration and shrinkage in big mass concrete because of utilizing pozzolanic effect and micro-crystal grain effect of superfine slag powder and flyash.Sentence dictionary

245. DESCRIPTION: Full of multiple good-quality herbal essence, strengthen the pores shrinkage through innovative ways; let the folliculus pili under good elastic moving status.

246. Adopted proportional solidification theory and technique, which avoids the dispersed shrinkage of cylinder sleeve castings and achieves the well effect.

247. The shrinkage cavity, depression, shrinkage porosity, scab and swell defects often took place with the heavy plate castings produced by adopting traditional foundry method.

248. Collapse-type shrinkage is one of highly refractory drying defects in low-medium density plantation-grown eucalypt wood used as solid wood products.

249. Inoculation treatment increases the eutectic cell count of gray iron and, as a result, causes undense defects of the castings including: inner shrinkage, or outer sink.

250. Synopsis: This paper introduces the position and characteristics of the blow hole shrinkage in the side riser of cast steel castings and probes into the formation mechanism and its prevention.

251. The main quality indexes of coking wood has wood balance moisture content than unprocessed materials low around 3%, dry shrinkage rate less than 5%, superior teak 7%.

252. The consequence of cut-throat competition is massive unemployment and market shrinkage.

253. Temperature and shrinkage crack of huge concrete can destruct concrete structure, so it is important to control the crack.

254. A numerical analysis method is presented to simulate the shrinkage porosity formation in steel castings on the basis of heat flow, interdendritic fluid flow and possible evolution of dissolved gases.

255. The heat treatment of ferronickel submerged arc furnace slag has little effect on reducing drying shrinkage of hardened cement paste.

256. Temperature shrinkage performance of lime and fly-ash stabilized coal gangue base course materials relates coal gangue aggregate and quality ratio of lime to fly-ash.

257. Reduction in herniated disk volume, as disk shrinkage may reduce nerve root Compression.

258. The mechanism of the inclusion and shrinkage cavity in high-strength brasses produced by bottom running method was analyzed from the point of view of production technology.

259. The early cracking of concrete is usually caused by dry shrinkage, autogenous shrinkage of cement hydration and thermal-strain by hydration heat of cement.

260. The paper states that the plastic cracks after shaped the pumping concreting divides into plastic settlement crack and plastic shrinkage crack.

261. The grouting material have ultra-early-strength, no shrinkage, early high flexural strength and so on... Simple construction Operation and easy accession to technology.

262. Centerline shrinkage and segregation are the main defects of continuous casting billet.

263. The influence of shrinkage, creep and temperature change on main beam geometry is studied.

264. Authors studied the influence of different kinds, quantity and length of polypropylene fiber on early stage plastic shrinkage crack of mortar.

265. After canceling the cold riser the shrinkage problem was successfully solved.

266. The shrinkage temperature, shrinkage ratio and curves of fibers in dechroming processes were studied by thermal platform microscope.

267. It adapts the method of fractional steps wavelet shrinkage for the solution of PDE based on above approach.

268. When the addition of ceramic reinforcement exceeded the maximum, the composite salt cores would produce large shrinkage cavity.

269. The results of tests show that the shrinkage properties of fly ash concrete and mortar are good.

270. The influence on fibers density and shrinkage by PVA and glycerin content is studied via parameter-transformation procession.